21023312222322 has 24 divisors (see below), whose sum is σ = 45968404404780. Its totient is φ = 6943479265440.

The previous prime is 21023312222257. The next prime is 21023312222327. The reversal of 21023312222322 is 22322221332012.

21023312222322 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 3 + 312 + 2 + 22 + 322 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19856568757041 + 1166743465281 = 4456071^2 + 1080159^2 .

It is not an unprimeable number, because it can be changed into a prime (21023312222327) 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, 5357620929 + ... + 5357624852.

Almost surely, 2^{21023312222322} is an apocalyptic number.

21023312222322 is an abundant number, since it is smaller than the sum of its proper divisors (24945092182458).

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

21023312222322 is a wasteful number, since it uses less digits than its factorization.

21023312222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715245898 (or 10715245895 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21023312222322 its reverse (22322221332012), we get a palindrome (43345533554334).

The spelling of 21023312222322 in words is "twenty-one trillion, twenty-three billion, three hundred twelve million, two hundred twenty-two thousand, three hundred twenty-two".