125073711221 has 2 divisors, whose sum is σ = 125073711222. Its totient is φ = 125073711220.

The previous prime is 125073711211. The next prime is 125073711229. The reversal of 125073711221 is 122117370521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87905727121 + 37167984100 = 296489^2 + 192790^2 .

It is a cyclic number.

It is not a de Polignac number, because 125073711221 - 2³⁴ = 107893842037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125073711229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62536855610 + 62536855611.

It is an arithmetic number, because the mean of its divisors is an integer number (62536855611).

Almost surely, 2^125073711221 is an apocalyptic number.

It is an amenable number.

125073711221 is a deficient number, since it is larger than the sum of its proper divisors (1).

125073711221 is an equidigital number, since it uses as much as digits as its factorization.

125073711221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The spelling of 125073711221 in words is "one hundred twenty-five billion, seventy-three million, seven hundred eleven thousand, two hundred twenty-one".