20102111331073 has 2 divisors, whose sum is σ = 20102111331074. Its totient is φ = 20102111331072.

The previous prime is 20102111331067. The next prime is 20102111331151. The reversal of 20102111331073 is 37013311120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14264006739984 + 5838104591089 = 3776772^2 + 2416217^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102111331073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102111341073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051055665536 + 10051055665537.

It is an arithmetic number, because the mean of its divisors is an integer number (10051055665537).

Almost surely, 2^{20102111331073} is an apocalyptic number.

It is an amenable number.

20102111331073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102111331073 is an equidigital number, since it uses as much as digits as its factorization.

20102111331073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 20102111331073 its reverse (37013311120102), we get a palindrome (57115422451175).

The spelling of 20102111331073 in words is "twenty trillion, one hundred two billion, one hundred eleven million, three hundred thirty-one thousand, seventy-three".