22185920861351 has 16 divisors (see below), whose sum is σ = 24045495460224. Its totient is φ = 20348206953984.

The previous prime is 22185920861347. The next prime is 22185920861387. The reversal of 22185920861351 is 15316802958122.

It is a happy number.

It is not a de Polignac number, because 22185920861351 - 2² = 22185920861347 is a prime.

It is a super-2 number, since 2×22185920861351² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22185920861293 and 22185920861302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22185920861051) 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, 69105266 + ... + 69425568.

It is an arithmetic number, because the mean of its divisors is an integer number (1502843466264).

Almost surely, 2^{22185920861351} is an apocalyptic number.

22185920861351 is a deficient number, since it is larger than the sum of its proper divisors (1859574598873).

22185920861351 is a wasteful number, since it uses less digits than its factorization.

22185920861351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354410.

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 22185920861351 in words is "twenty-two trillion, one hundred eighty-five billion, nine hundred twenty million, eight hundred sixty-one thousand, three hundred fifty-one".