21227062999 has 2 divisors, whose sum is σ = 21227063000. Its totient is φ = 21227062998.

The previous prime is 21227062993. The next prime is 21227063029. The reversal of 21227062999 is 99926072212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21227062999 - 2²¹ = 21224965847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21227062993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10613531499 + 10613531500.

It is an arithmetic number, because the mean of its divisors is an integer number (10613531500).

Almost surely, 2^21227062999 is an apocalyptic number.

21227062999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21227062999 is an equidigital number, since it uses as much as digits as its factorization.

21227062999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 21227062999 in words is "twenty-one billion, two hundred twenty-seven million, sixty-two thousand, nine hundred ninety-nine".