20122113213231 has 4 divisors (see below), whose sum is σ = 26829484284312. Its totient is φ = 13414742142152.

The previous prime is 20122113213203. The next prime is 20122113213233. The reversal of 20122113213231 is 13231231122102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122113213231 - 2⁵ = 20122113213199 is a prime.

It is a super-2 number, since 2×20122113213231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122113213233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353685535536 + ... + 3353685535541.

It is an arithmetic number, because the mean of its divisors is an integer number (6707371071078).

Almost surely, 2^{20122113213231} is an apocalyptic number.

20122113213231 is a deficient number, since it is larger than the sum of its proper divisors (6707371071081).

20122113213231 is an equidigital number, since it uses as much as digits as its factorization.

20122113213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707371071080.

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

Adding to 20122113213231 its reverse (13231231122102), we get a palindrome (33353344335333).

The spelling of 20122113213231 in words is "twenty trillion, one hundred twenty-two billion, one hundred thirteen million, two hundred thirteen thousand, two hundred thirty-one".