21111100100032 has 14 divisors (see below), whose sum is σ = 41892339261128. Its totient is φ = 10555550049984.

The previous prime is 21111100100029. The next prime is 21111100100063. The reversal of 21111100100032 is 23000100111112.

It is a happy number.

It is a super-2 number, since 2×21111100100032² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111100099985 and 21111100100021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164930469468 + ... + 164930469595.

Almost surely, 2^{21111100100032} is an apocalyptic number.

It is an amenable number.

21111100100032 is a deficient number, since it is larger than the sum of its proper divisors (20781239161096).

21111100100032 is an equidigital number, since it uses as much as digits as its factorization.

21111100100032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329860939075 (or 329860939065 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21111100100032 its reverse (23000100111112), we get a palindrome (44111200211144).

The spelling of 21111100100032 in words is "twenty-one trillion, one hundred eleven billion, one hundred million, one hundred thousand, thirty-two".