220399964927 has 2 divisors, whose sum is σ = 220399964928. Its totient is φ = 220399964926.

The previous prime is 220399964921. The next prime is 220399964929. The reversal of 220399964927 is 729469993022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220399964927 - 2²⁴ = 220383187711 is a prime.

It is a super-2 number, since 2×220399964927² (a number of 23 digits) contains 22 as substring.

Together with 220399964929, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220399964927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220399964921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110199982463 + 110199982464.

It is an arithmetic number, because the mean of its divisors is an integer number (110199982464).

Almost surely, 2^220399964927 is an apocalyptic number.

220399964927 is a deficient number, since it is larger than the sum of its proper divisors (1).

220399964927 is an equidigital number, since it uses as much as digits as its factorization.

220399964927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 220399964927 in words is "two hundred twenty billion, three hundred ninety-nine million, nine hundred sixty-four thousand, nine hundred twenty-seven".