21622203368179 has 2 divisors, whose sum is σ = 21622203368180. Its totient is φ = 21622203368178.

The previous prime is 21622203368119. The next prime is 21622203368257. The reversal of 21622203368179 is 97186330222612.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21622203368179 - 2³⁵ = 21587843629811 is a prime.

It is not a weakly prime, because it can be changed into another prime (21622203368119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10811101684089 + 10811101684090.

It is an arithmetic number, because the mean of its divisors is an integer number (10811101684090).

Almost surely, 2^{21622203368179} is an apocalyptic number.

21622203368179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21622203368179 is an equidigital number, since it uses as much as digits as its factorization.

21622203368179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 21622203368179 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred three million, three hundred sixty-eight thousand, one hundred seventy-nine".