20012311213122 has 32 divisors (see below), whose sum is σ = 40115764740672. Its totient is φ = 6655582612224.

The previous prime is 20012311213109. The next prime is 20012311213133. The reversal of 20012311213122 is 22131211321002.

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, 31124278 + ... + 31760750.

It is an arithmetic number, because the mean of its divisors is an integer number (1253617648146).

Almost surely, 2^{20012311213122} is an apocalyptic number.

20012311213122 is an abundant number, since it is smaller than the sum of its proper divisors (20103453527550).

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

20012311213122 is a wasteful number, since it uses less digits than its factorization.

20012311213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648402.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20012311213122 its reverse (22131211321002), we get a palindrome (42143522534124).

The spelling of 20012311213122 in words is "twenty trillion, twelve billion, three hundred eleven million, two hundred thirteen thousand, one hundred twenty-two".