21023202320212 has 12 divisors (see below), whose sum is σ = 36792997364116. Its totient is φ = 10510917359040.

The previous prime is 21023202320209. The next prime is 21023202320227. The reversal of 21023202320212 is 21202320232012.

It can be written as a sum of positive squares in 2 ways, for example, as 83847310096 + 20939355010116 = 289564^2 + 4575954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170881089 + ... + 171004072.

Almost surely, 2^{21023202320212} is an apocalyptic number.

It is an amenable number.

21023202320212 is a deficient number, since it is larger than the sum of its proper divisors (15769795043904).

21023202320212 is a wasteful number, since it uses less digits than its factorization.

21023202320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341900538 (or 341900536 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21023202320212 its reverse (21202320232012), we get a palindrome (42225522552224).

The spelling of 21023202320212 in words is "twenty-one trillion, twenty-three billion, two hundred two million, three hundred twenty thousand, two hundred twelve".