22217557357 has 4 divisors (see below), whose sum is σ = 22230320476. Its totient is φ = 22204794240.

The previous prime is 22217557331. The next prime is 22217557399. The reversal of 22217557357 is 75375571222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9720776836 + 12496780521 = 98594^2 + 111789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22217557357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22217557657) 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, 6378948 + ... + 6382429.

It is an arithmetic number, because the mean of its divisors is an integer number (5557580119).

Almost surely, 2^22217557357 is an apocalyptic number.

It is an amenable number.

22217557357 is a deficient number, since it is larger than the sum of its proper divisors (12763119).

22217557357 is a wasteful number, since it uses less digits than its factorization.

22217557357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12763118.

The product of its digits is 1029000, while the sum is 46.

The spelling of 22217557357 in words is "twenty-two billion, two hundred seventeen million, five hundred fifty-seven thousand, three hundred fifty-seven".