172211210051 has 8 divisors (see below), whose sum is σ = 175175920464. Its totient is φ = 169251066720.

The previous prime is 172211210047. The next prime is 172211210161. The reversal of 172211210051 is 150012112271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172211210051 - 2² = 172211210047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172211209999 and 172211210026.

It is not an unprimeable number, because it can be changed into a prime (172211210251) 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, 1065665 + ... + 1216578.

It is an arithmetic number, because the mean of its divisors is an integer number (21896990058).

Almost surely, 2^172211210051 is an apocalyptic number.

172211210051 is a deficient number, since it is larger than the sum of its proper divisors (2964710413).

172211210051 is a wasteful number, since it uses less digits than its factorization.

172211210051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283541.

The product of its (nonzero) digits is 280, while the sum is 23.

The spelling of 172211210051 in words is "one hundred seventy-two billion, two hundred eleven million, two hundred ten thousand, fifty-one".