21252335227 has 2 divisors, whose sum is σ = 21252335228. Its totient is φ = 21252335226.

The previous prime is 21252335207. The next prime is 21252335287. The reversal of 21252335227 is 72253325212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21252335227 - 2⁷ = 21252335099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21252335192 and 21252335201.

It is not a weakly prime, because it can be changed into another prime (21252335207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10626167613 + 10626167614.

It is an arithmetic number, because the mean of its divisors is an integer number (10626167614).

Almost surely, 2^21252335227 is an apocalyptic number.

21252335227 is a deficient number, since it is larger than the sum of its proper divisors (1).

21252335227 is an equidigital number, since it uses as much as digits as its factorization.

21252335227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 34.

The spelling of 21252335227 in words is "twenty-one billion, two hundred fifty-two million, three hundred thirty-five thousand, two hundred twenty-seven".