2120523013997 has 2 divisors, whose sum is σ = 2120523013998. Its totient is φ = 2120523013996.

The previous prime is 2120523013969. The next prime is 2120523014023. The reversal of 2120523013997 is 7993103250212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282252757956 + 838270256041 = 1132366^2 + 915571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120523013997 - 2²⁰ = 2120521965421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120523013937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060261506998 + 1060261506999.

It is an arithmetic number, because the mean of its divisors is an integer number (1060261506999).

Almost surely, 2^{2120523013997} is an apocalyptic number.

It is an amenable number.

2120523013997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120523013997 is an equidigital number, since it uses as much as digits as its factorization.

2120523013997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 2120523013997 in words is "two trillion, one hundred twenty billion, five hundred twenty-three million, thirteen thousand, nine hundred ninety-seven".