21111101311032 has 48 divisors (see below), whose sum is σ = 57176164824480. Its totient is φ = 7037001100800.

The previous prime is 21111101311019. The next prime is 21111101311033. The reversal of 21111101311032 is 23011310111112.

21111101311032 is a `hidden beast` number, since 211 + 1 + 110 + 1 + 311 + 0 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21111101310996 and 21111101311014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111101311033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18769032 + ... + 19861992.

It is an arithmetic number, because the mean of its divisors is an integer number (1191170100510).

Almost surely, 2^{21111101311032} is an apocalyptic number.

It is an amenable number.

21111101311032 is an abundant number, since it is smaller than the sum of its proper divisors (36065063513448).

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

21111101311032 is a wasteful number, since it uses less digits than its factorization.

21111101311032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361244 (or 1361237 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 21111101311032 its reverse (23011310111112), we get a palindrome (44122411422144).

The spelling of 21111101311032 in words is "twenty-one trillion, one hundred eleven billion, one hundred one million, three hundred eleven thousand, thirty-two".