21234662227 has 2 divisors, whose sum is σ = 21234662228. Its totient is φ = 21234662226.

The previous prime is 21234662221. The next prime is 21234662299. The reversal of 21234662227 is 72226643212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21234662227 - 2²³ = 21226273619 is a prime.

It is not a weakly prime, because it can be changed into another prime (21234662221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10617331113 + 10617331114.

It is an arithmetic number, because the mean of its divisors is an integer number (10617331114).

Almost surely, 2^21234662227 is an apocalyptic number.

21234662227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21234662227 is an equidigital number, since it uses as much as digits as its factorization.

21234662227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 37.

The spelling of 21234662227 in words is "twenty-one billion, two hundred thirty-four million, six hundred sixty-two thousand, two hundred twenty-seven".