1102100220 has 144 divisors (see below), whose sum is σ = 3716573952. Its totient is φ = 262517760.

The previous prime is 1102100171. The next prime is 1102100243. The reversal of 1102100220 is 220012011.

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 64944 + ... + 80136.

Almost surely, 2^1102100220 is an apocalyptic number.

1102100220 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 1102100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1858286976).

1102100220 is an abundant number, since it is smaller than the sum of its proper divisors (2614473732).

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

1102100220 is a wasteful number, since it uses less digits than its factorization.

1102100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15252 (or 15247 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1102100220 is about 33197.8948127739. The cubic root of 1102100220 is about 1032.9366721276.

Adding to 1102100220 its reverse (220012011), we get a palindrome (1322112231).

The spelling of 1102100220 in words is "one billion, one hundred two million, one hundred thousand, two hundred twenty".