13123021111973 has 2 divisors, whose sum is σ = 13123021111974. Its totient is φ = 13123021111972.

The previous prime is 13123021111931. The next prime is 13123021112041. The reversal of 13123021111973 is 37911112032131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8470794874369 + 4652226237604 = 2910463^2 + 2156902^2 .

It is a cyclic number.

It is not a de Polignac number, because 13123021111973 - 2²⁶ = 13122954003109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13123021111373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561510555986 + 6561510555987.

It is an arithmetic number, because the mean of its divisors is an integer number (6561510555987).

Almost surely, 2^{13123021111973} is an apocalyptic number.

It is an amenable number.

13123021111973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123021111973 is an equidigital number, since it uses as much as digits as its factorization.

13123021111973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 13123021111973 in words is "thirteen trillion, one hundred twenty-three billion, twenty-one million, one hundred eleven thousand, nine hundred seventy-three".