21032311101100 has 72 divisors (see below), whose sum is σ = 49824193304480. Its totient is φ = 7659395873280.

The previous prime is 21032311101077. The next prime is 21032311101103. The reversal of 21032311101100 is 110111323012.

It is a happy number.

It is a super-2 number, since 2×21032311101100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21032311101103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110718120 + ... + 110907919.

Almost surely, 2^{21032311101100} is an apocalyptic number.

21032311101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21032311101100 is an abundant number, since it is smaller than the sum of its proper divisors (28791882203380).

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

21032311101100 is a wasteful number, since it uses less digits than its factorization.

21032311101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221626139 (or 221626132 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21032311101100 its reverse (110111323012), we get a palindrome (21142422424112).

The spelling of 21032311101100 in words is "twenty-one trillion, thirty-two billion, three hundred eleven million, one hundred one thousand, one hundred".