21011023321232 has 40 divisors (see below), whose sum is σ = 46533014601216. Its totient is φ = 9003058638336.

The previous prime is 21011023321181. The next prime is 21011023321241. The reversal of 21011023321232 is 23212332011012.

It is a junction number, because it is equal to n+sod(n) for n = 21011023321198 and 21011023321207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16742153 + ... + 17953320.

Almost surely, 2^{21011023321232} is an apocalyptic number.

It is an amenable number.

21011023321232 is an abundant number, since it is smaller than the sum of its proper divisors (25521991279984).

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

21011023321232 is a wasteful number, since it uses less digits than its factorization.

21011023321232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34700895 (or 34700889 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21011023321232 its reverse (23212332011012), we get a palindrome (44223355332244).

The spelling of 21011023321232 in words is "twenty-one trillion, eleven billion, twenty-three million, three hundred twenty-one thousand, two hundred thirty-two".