21904226170 has 16 divisors (see below), whose sum is σ = 39810401280. Its totient is φ = 8676625104.

The previous prime is 21904226159. The next prime is 21904226173. The reversal of 21904226170 is 7162240912.

It is a super-4 number, since 4×21904226170⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (21904226173) 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, 10632090 + ... + 10634149.

It is an arithmetic number, because the mean of its divisors is an integer number (2488150080).

Almost surely, 2^21904226170 is an apocalyptic number.

21904226170 is a deficient number, since it is larger than the sum of its proper divisors (17906175110).

21904226170 is a wasteful number, since it uses less digits than its factorization.

21904226170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21266349.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 21904226170 in words is "twenty-one billion, nine hundred four million, two hundred twenty-six thousand, one hundred seventy".