16661657222122 has 32 divisors (see below), whose sum is σ = 27350044243200. Its totient is φ = 7549757214720.

The previous prime is 16661657222071. The next prime is 16661657222123. The reversal of 16661657222122 is 22122275616661.

It is a super-2 number, since 2×16661657222122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16661657222123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10130818 + ... + 11660050.

It is an arithmetic number, because the mean of its divisors is an integer number (854688882600).

Almost surely, 2^{16661657222122} is an apocalyptic number.

16661657222122 is a deficient number, since it is larger than the sum of its proper divisors (10688387021078).

16661657222122 is a wasteful number, since it uses less digits than its factorization.

16661657222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530798.

The product of its digits is 1451520, while the sum is 49.

The spelling of 16661657222122 in words is "sixteen trillion, six hundred sixty-one billion, six hundred fifty-seven million, two hundred twenty-two thousand, one hundred twenty-two".