21011001022232 has 64 divisors (see below), whose sum is σ = 42511788211200. Its totient is φ = 9677796226560.

The previous prime is 21011001022163. The next prime is 21011001022307. The reversal of 21011001022232 is 23222010011012.

It is a self number, because there is not a number n which added to its sum of digits gives 21011001022232.

It is a congruent number.

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, 363942953 + ... + 364000679.

It is an arithmetic number, because the mean of its divisors is an integer number (664246690800).

Almost surely, 2^{21011001022232} is an apocalyptic number.

It is an amenable number.

21011001022232 is an abundant number, since it is smaller than the sum of its proper divisors (21500787188968).

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

21011001022232 is a wasteful number, since it uses less digits than its factorization.

21011001022232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64756 (or 64752 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21011001022232 its reverse (23222010011012), we get a palindrome (44233011033244).

The spelling of 21011001022232 in words is "twenty-one trillion, eleven billion, one million, twenty-two thousand, two hundred thirty-two".