210021311179 has 2 divisors, whose sum is σ = 210021311180. Its totient is φ = 210021311178.

The previous prime is 210021311131. The next prime is 210021311231. The reversal of 210021311179 is 971113120012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210021311179 - 2¹¹ = 210021309131 is a prime.

It is a super-2 number, since 2×210021311179² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210021311879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010655589 + 105010655590.

It is an arithmetic number, because the mean of its divisors is an integer number (105010655590).

Almost surely, 2^210021311179 is an apocalyptic number.

210021311179 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021311179 is an equidigital number, since it uses as much as digits as its factorization.

210021311179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 28.

The spelling of 210021311179 in words is "two hundred ten billion, twenty-one million, three hundred eleven thousand, one hundred seventy-nine".