601531125121 has 2 divisors, whose sum is σ = 601531125122. Its totient is φ = 601531125120.

The previous prime is 601531125079. The next prime is 601531125131. The reversal of 601531125121 is 121521135106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566022999025 + 35508126096 = 752345^2 + 188436^2 .

It is a cyclic number.

It is not a de Polignac number, because 601531125121 - 2²⁷ = 601396907393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 601531125121.

It is not a weakly prime, because it can be changed into another prime (601531125131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300765562560 + 300765562561.

It is an arithmetic number, because the mean of its divisors is an integer number (300765562561).

Almost surely, 2^601531125121 is an apocalyptic number.

It is an amenable number.

601531125121 is a deficient number, since it is larger than the sum of its proper divisors (1).

601531125121 is an equidigital number, since it uses as much as digits as its factorization.

601531125121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 601531125121 in words is "six hundred one billion, five hundred thirty-one million, one hundred twenty-five thousand, one hundred twenty-one".