20012211013931 has 2 divisors, whose sum is σ = 20012211013932. Its totient is φ = 20012211013930.

The previous prime is 20012211013889. The next prime is 20012211013973. The reversal of 20012211013931 is 13931011221002.

It is a balanced prime because it is at equal distance from previous prime (20012211013889) and next prime (20012211013973).

It is a cyclic number.

It is not a de Polignac number, because 20012211013931 - 2⁶ = 20012211013867 is a prime.

It is a super-2 number, since 2×20012211013931² (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 20012211013931.

It is not a weakly prime, because it can be changed into another prime (20012211013231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006105506965 + 10006105506966.

It is an arithmetic number, because the mean of its divisors is an integer number (10006105506966).

Almost surely, 2^{20012211013931} is an apocalyptic number.

20012211013931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012211013931 is an equidigital number, since it uses as much as digits as its factorization.

20012211013931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

Adding to 20012211013931 its reverse (13931011221002), we get a palindrome (33943222234933).

The spelling of 20012211013931 in words is "twenty trillion, twelve billion, two hundred eleven million, thirteen thousand, nine hundred thirty-one".