1200110100 has 144 divisors (see below), whose sum is σ = 4141068288. Its totient is φ = 262373760.

The previous prime is 1200110083. The next prime is 1200110117. The reversal of 1200110100 is 10110021.

It is an interprime number because it is at equal distance from previous prime (1200110083) and next prime (1200110117).

It is a super-4 number, since 4×1200110100⁴ (a number of 37 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35877 + ... + 60723.

Almost surely, 2^1200110100 is an apocalyptic number.

1200110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200110100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2070534144).

1200110100 is an abundant number, since it is smaller than the sum of its proper divisors (2940958188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200110100 is a wasteful number, since it uses less digits than its factorization.

1200110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24894 (or 24887 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1200110100 is about 34642.6052715439. The cubic root of 1200110100 is about 1062.6910678300.

Adding to 1200110100 its reverse (10110021), we get a palindrome (1210220121).

The spelling of 1200110100 in words is "one billion, two hundred million, one hundred ten thousand, one hundred".