21133311032112 has 80 divisors (see below), whose sum is σ = 56043652524288. Its totient is φ = 6858488528640.

The previous prime is 21133311032101. The next prime is 21133311032129. The reversal of 21133311032112 is 21123011333112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15819523 + ... + 17103330.

Almost surely, 2^{21133311032112} is an apocalyptic number.

It is an amenable number.

21133311032112 is an abundant number, since it is smaller than the sum of its proper divisors (34910341492176).

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

21133311032112 is a wasteful number, since it uses less digits than its factorization.

21133311032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32923218 (or 32923212 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 21133311032112 its reverse (21123011333112), we get a palindrome (42256322365224).

The spelling of 21133311032112 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred eleven million, thirty-two thousand, one hundred twelve".