21312213211032 has 32 divisors (see below), whose sum is σ = 53357639484480. Its totient is φ = 7093790209440.

The previous prime is 21312213211027. The next prime is 21312213211061. The reversal of 21312213211032 is 23011231221312.

21312213211032 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 21312213210993 and 21312213211011.

It is a congruent number.

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, 642536878 + ... + 642570045.

It is an arithmetic number, because the mean of its divisors is an integer number (1667426233890).

Almost surely, 2^{21312213211032} is an apocalyptic number.

It is an amenable number.

21312213211032 is an abundant number, since it is smaller than the sum of its proper divisors (32045426273448).

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

21312213211032 is a wasteful number, since it uses less digits than its factorization.

21312213211032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285107623 (or 1285107619 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21312213211032 its reverse (23011231221312), we get a palindrome (44323444432344).

The spelling of 21312213211032 in words is "twenty-one trillion, three hundred twelve billion, two hundred thirteen million, two hundred eleven thousand, thirty-two".