221457633656627 has 2 divisors, whose sum is σ = 221457633656628. Its totient is φ = 221457633656626.

The previous prime is 221457633656599. The next prime is 221457633656659. The reversal of 221457633656627 is 726656336754122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221457633656627 - 2¹⁸ = 221457633394483 is a prime.

It is not a weakly prime, because it can be changed into another prime (221457633656027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110728816828313 + 110728816828314.

It is an arithmetic number, because the mean of its divisors is an integer number (110728816828314).

Almost surely, 2^{221457633656627} is an apocalyptic number.

221457633656627 is a deficient number, since it is larger than the sum of its proper divisors (1).

221457633656627 is an equidigital number, since it uses as much as digits as its factorization.

221457633656627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 457228800, while the sum is 65.

The spelling of 221457633656627 in words is "two hundred twenty-one trillion, four hundred fifty-seven billion, six hundred thirty-three million, six hundred fifty-six thousand, six hundred twenty-seven".