21033100159 has 2 divisors, whose sum is σ = 21033100160. Its totient is φ = 21033100158.

The previous prime is 21033100093. The next prime is 21033100177. The reversal of 21033100159 is 95100133012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21033100159 - 2¹³ = 21033091967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21033100199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516550079 + 10516550080.

It is an arithmetic number, because the mean of its divisors is an integer number (10516550080).

Almost surely, 2^21033100159 is an apocalyptic number.

21033100159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21033100159 is an equidigital number, since it uses as much as digits as its factorization.

21033100159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 25.

The spelling of 21033100159 in words is "twenty-one billion, thirty-three million, one hundred thousand, one hundred fifty-nine".