21121963201159 has 2 divisors, whose sum is σ = 21121963201160. Its totient is φ = 21121963201158.

The previous prime is 21121963201139. The next prime is 21121963201187. The reversal of 21121963201159 is 95110236912112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21121963201159 - 2¹¹ = 21121963199111 is a prime.

It is a super-2 number, since 2×21121963201159² (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 (21121963201139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560981600579 + 10560981600580.

It is an arithmetic number, because the mean of its divisors is an integer number (10560981600580).

Almost surely, 2^{21121963201159} is an apocalyptic number.

21121963201159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121963201159 is an equidigital number, since it uses as much as digits as its factorization.

21121963201159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 21121963201159 in words is "twenty-one trillion, one hundred twenty-one billion, nine hundred sixty-three million, two hundred one thousand, one hundred fifty-nine".