2501019121 has 2 divisors, whose sum is σ = 2501019122. Its totient is φ = 2501019120.

The previous prime is 2501019113. The next prime is 2501019127. The reversal of 2501019121 is 1219101052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1811694096 + 689325025 = 42564^2 + 26255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2501019121 - 2³ = 2501019113 is a prime.

It is a super-2 number, since 2×2501019121² = 12510193287215225282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2501019092 and 2501019101.

It is not a weakly prime, because it can be changed into another prime (2501019127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250509560 + 1250509561.

It is an arithmetic number, because the mean of its divisors is an integer number (1250509561).

Almost surely, 2^2501019121 is an apocalyptic number.

It is an amenable number.

2501019121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2501019121 is an equidigital number, since it uses as much as digits as its factorization.

2501019121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 2501019121 is about 50010.1901716040. The cubic root of 2501019121 is about 1357.3932045765.

The spelling of 2501019121 in words is "two billion, five hundred one million, nineteen thousand, one hundred twenty-one".