1001210100 has 144 divisors (see below), whose sum is σ = 3262457856. Its totient is φ = 234864000.

The previous prime is 1001210083. The next prime is 1001210101. The reversal of 1001210100 is 10121001.

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 not an unprimeable number, because it can be changed into a prime (1001210101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97407 + ... + 107193.

Almost surely, 2^1001210100 is an apocalyptic number.

1001210100 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 1001210100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631228928).

1001210100 is an abundant number, since it is smaller than the sum of its proper divisors (2261247756).

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

1001210100 is a wasteful number, since it uses less digits than its factorization.

1001210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846 (or 9839 counting only the distinct ones).

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

The square root of 1001210100 is about 31641.9041778462. The cubic root of 1001210100 is about 1000.4032040713.

Adding to 1001210100 its reverse (10121001), we get a palindrome (1011331101).

The spelling of 1001210100 in words is "one billion, one million, two hundred ten thousand, one hundred".