21717110522 has 16 divisors (see below), whose sum is σ = 32975595072. Its totient is φ = 10725304800.

The previous prime is 21717110497. The next prime is 21717110533. The reversal of 21717110522 is 22501171712.

It is a happy number.

It is a super-2 number, since 2×21717110522² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887147 + ... + 911297.

It is an arithmetic number, because the mean of its divisors is an integer number (2060974692).

Almost surely, 2^21717110522 is an apocalyptic number.

21717110522 is a deficient number, since it is larger than the sum of its proper divisors (11258484550).

21717110522 is a wasteful number, since it uses less digits than its factorization.

21717110522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29653.

The product of its (nonzero) digits is 1960, while the sum is 29.

The spelling of 21717110522 in words is "twenty-one billion, seven hundred seventeen million, one hundred ten thousand, five hundred twenty-two".