2120506012057 has 2 divisors, whose sum is σ = 2120506012058. Its totient is φ = 2120506012056.

The previous prime is 2120506011959. The next prime is 2120506012067. The reversal of 2120506012057 is 7502106050212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1546493703561 + 574012308496 = 1243581^2 + 757636^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120506012057 - 2³⁵ = 2086146273689 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120506012067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060253006028 + 1060253006029.

It is an arithmetic number, because the mean of its divisors is an integer number (1060253006029).

Almost surely, 2^{2120506012057} is an apocalyptic number.

It is an amenable number.

2120506012057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120506012057 is an equidigital number, since it uses as much as digits as its factorization.

2120506012057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 2120506012057 in words is "two trillion, one hundred twenty billion, five hundred six million, twelve thousand, fifty-seven".