22102005257 has 8 divisors (see below), whose sum is σ = 22579347456. Its totient is φ = 21624958432.

The previous prime is 22102005253. The next prime is 22102005283. The reversal of 22102005257 is 75250020122.

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 22102005257 - 2² = 22102005253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22102005253) 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, 80888 + ... + 225270.

It is an arithmetic number, because the mean of its divisors is an integer number (2822418432).

Almost surely, 2^22102005257 is an apocalyptic number.

It is an amenable number.

22102005257 is a deficient number, since it is larger than the sum of its proper divisors (477342199).

22102005257 is a wasteful number, since it uses less digits than its factorization.

22102005257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147687.

The product of its (nonzero) digits is 2800, while the sum is 26.

Adding to 22102005257 its reverse (75250020122), we get a palindrome (97352025379).

The spelling of 22102005257 in words is "twenty-two billion, one hundred two million, five thousand, two hundred fifty-seven".