21012222002159 has 2 divisors, whose sum is σ = 21012222002160. Its totient is φ = 21012222002158.

The previous prime is 21012222002087. The next prime is 21012222002207. The reversal of 21012222002159 is 95120022221012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21012222002159 - 2²⁴ = 21012205224943 is a prime.

It is a super-2 number, since 2×21012222002159² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21012222001159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506111001079 + 10506111001080.

It is an arithmetic number, because the mean of its divisors is an integer number (10506111001080).

Almost surely, 2^{21012222002159} is an apocalyptic number.

21012222002159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012222002159 is an equidigital number, since it uses as much as digits as its factorization.

21012222002159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 21012222002159 in words is "twenty-one trillion, twelve billion, two hundred twenty-two million, two thousand, one hundred fifty-nine".