20122231213 has 16 divisors (see below), whose sum is σ = 23502495744. Its totient is φ = 16868893680.

The previous prime is 20122231211. The next prime is 20122231277. The reversal of 20122231213 is 31213222102.

It is a cyclic number.

It is not a de Polignac number, because 20122231213 - 2¹ = 20122231211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122231211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468658 + ... + 509788.

It is an arithmetic number, because the mean of its divisors is an integer number (1468905984).

Almost surely, 2^20122231213 is an apocalyptic number.

It is an amenable number.

20122231213 is a deficient number, since it is larger than the sum of its proper divisors (3380264531).

20122231213 is a wasteful number, since it uses less digits than its factorization.

20122231213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42672.

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

Adding to 20122231213 its reverse (31213222102), we get a palindrome (51335453315).

The spelling of 20122231213 in words is "twenty billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred thirteen".