20012222220931 has 2 divisors, whose sum is σ = 20012222220932. Its totient is φ = 20012222220930.

The previous prime is 20012222220911. The next prime is 20012222221081. The reversal of 20012222220931 is 13902222221002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012222220931 - 2¹³ = 20012222212739 is a prime.

It is a super-2 number, since 2×20012222220931² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20012222220931.

It is not a weakly prime, because it can be changed into another prime (20012222220911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006111110465 + 10006111110466.

It is an arithmetic number, because the mean of its divisors is an integer number (10006111110466).

Almost surely, 2^{20012222220931} is an apocalyptic number.

20012222220931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012222220931 is an equidigital number, since it uses as much as digits as its factorization.

20012222220931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 20012222220931 its reverse (13902222221002), we get a palindrome (33914444441933).

The spelling of 20012222220931 in words is "twenty trillion, twelve billion, two hundred twenty-two million, two hundred twenty thousand, nine hundred thirty-one".