221375118257 has 8 divisors (see below), whose sum is σ = 228712776960. Its totient is φ = 214049742480.

The previous prime is 221375118241. The next prime is 221375118271. The reversal of 221375118257 is 752811573122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221375118257 - 2⁴ = 221375118241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221375118227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3034082 + ... + 3106187.

It is an arithmetic number, because the mean of its divisors is an integer number (28589097120).

Almost surely, 2^221375118257 is an apocalyptic number.

It is an amenable number.

221375118257 is a deficient number, since it is larger than the sum of its proper divisors (7337658703).

221375118257 is a wasteful number, since it uses less digits than its factorization.

221375118257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141463.

The product of its digits is 235200, while the sum is 44.

The spelling of 221375118257 in words is "two hundred twenty-one billion, three hundred seventy-five million, one hundred eighteen thousand, two hundred fifty-seven".