21376460227 has 2 divisors, whose sum is σ = 21376460228. Its totient is φ = 21376460226.

The previous prime is 21376460219. The next prime is 21376460243. The reversal of 21376460227 is 72206467312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21376460227 - 2³ = 21376460219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21376460227.

It is not a weakly prime, because it can be changed into another prime (1376460227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688230113 + 10688230114.

It is an arithmetic number, because the mean of its divisors is an integer number (10688230114).

Almost surely, 2^21376460227 is an apocalyptic number.

21376460227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21376460227 is an equidigital number, since it uses as much as digits as its factorization.

21376460227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 21376460227 in words is "twenty-one billion, three hundred seventy-six million, four hundred sixty thousand, two hundred twenty-seven".