2121030020159 has 2 divisors, whose sum is σ = 2121030020160. Its totient is φ = 2121030020158.

The previous prime is 2121030020117. The next prime is 2121030020171. The reversal of 2121030020159 is 9510200301212.

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-2121030020159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121030020959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060515010079 + 1060515010080.

It is an arithmetic number, because the mean of its divisors is an integer number (1060515010080).

Almost surely, 2^{2121030020159} is an apocalyptic number.

2121030020159 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121030020159 is an equidigital number, since it uses as much as digits as its factorization.

2121030020159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 2121030020159 in words is "two trillion, one hundred twenty-one billion, thirty million, twenty thousand, one hundred fifty-nine".