2121025939027 has 2 divisors, whose sum is σ = 2121025939028. Its totient is φ = 2121025939026.

The previous prime is 2121025938991. The next prime is 2121025939031. The reversal of 2121025939027 is 7209395201212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121025939027 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121025939127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060512969513 + 1060512969514.

It is an arithmetic number, because the mean of its divisors is an integer number (1060512969514).

Almost surely, 2^{2121025939027} is an apocalyptic number.

2121025939027 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121025939027 is an equidigital number, since it uses as much as digits as its factorization.

2121025939027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 2121025939027 in words is "two trillion, one hundred twenty-one billion, twenty-five million, nine hundred thirty-nine thousand, twenty-seven".