20312321122 has 4 divisors (see below), whose sum is σ = 30468481686. Its totient is φ = 10156160560.

The previous prime is 20312321101. The next prime is 20312321167. The reversal of 20312321122 is 22112321302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10578328201 + 9733992921 = 102851^2 + 98661^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20312321122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078080279 + ... + 5078080282.

Almost surely, 2^20312321122 is an apocalyptic number.

20312321122 is a deficient number, since it is larger than the sum of its proper divisors (10156160564).

20312321122 is a wasteful number, since it uses less digits than its factorization.

20312321122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10156160563.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20312321122 its reverse (22112321302), we get a palindrome (42424642424).

The spelling of 20312321122 in words is "twenty billion, three hundred twelve million, three hundred twenty-one thousand, one hundred twenty-two".