22221257670 has 48 divisors (see below), whose sum is σ = 58566729312. Its totient is φ = 5844493440.

The previous prime is 22221257659. The next prime is 22221257671. The reversal of 22221257670 is 7675212222.

22221257670 is a `hidden beast` number, since 2 + 2 + 2 + 2 + 12 + 576 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221257671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684546 + ... + 1697685.

It is an arithmetic number, because the mean of its divisors is an integer number (1220140194).

Almost surely, 2^22221257670 is an apocalyptic number.

22221257670 is an abundant number, since it is smaller than the sum of its proper divisors (36345471642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221257670 is a wasteful number, since it uses less digits than its factorization.

22221257670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382317 (or 3382314 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

Adding to 22221257670 its reverse (7675212222), we get a palindrome (29896469892).

The spelling of 22221257670 in words is "twenty-two billion, two hundred twenty-one million, two hundred fifty-seven thousand, six hundred seventy".