21227600057 has 4 divisors (see below), whose sum is σ = 21232747776. Its totient is φ = 21222452340.

The previous prime is 21227600027. The next prime is 21227600087. The reversal of 21227600057 is 75000672212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (21227600027) and next prime (21227600087).

It is a cyclic number.

It is not a de Polignac number, because 21227600057 - 2⁸ = 21227599801 is a prime.

It is a super-2 number, since 2×21227600057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21227599996 and 21227600032.

It is not an unprimeable number, because it can be changed into a prime (21227600027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2567669 + ... + 2575922.

It is an arithmetic number, because the mean of its divisors is an integer number (5308186944).

Almost surely, 2^21227600057 is an apocalyptic number.

It is an amenable number.

21227600057 is a deficient number, since it is larger than the sum of its proper divisors (5147719).

21227600057 is an equidigital number, since it uses as much as digits as its factorization.

21227600057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147718.

The product of its (nonzero) digits is 11760, while the sum is 32.

The spelling of 21227600057 in words is "twenty-one billion, two hundred twenty-seven million, six hundred thousand, fifty-seven".