21110102200 has 48 divisors (see below), whose sum is σ = 53542901160. Its totient is φ = 7676400000.

The previous prime is 21110102197. The next prime is 21110102227. The reversal of 21110102200 is 220101112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4795551 + ... + 4799950.

Almost surely, 2^21110102200 is an apocalyptic number.

21110102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110102200 is an abundant number, since it is smaller than the sum of its proper divisors (32432798960).

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

21110102200 is a wasteful number, since it uses less digits than its factorization.

21110102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595528 (or 9595519 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21110102200 its reverse (220101112), we get a palindrome (21330203312).

The spelling of 21110102200 in words is "twenty-one billion, one hundred ten million, one hundred two thousand, two hundred".