211157052170 has 8 divisors (see below), whose sum is σ = 380082693924. Its totient is φ = 84462820864.

The previous prime is 211157052163. The next prime is 211157052199. The reversal of 211157052170 is 71250751112.

It can be written as a sum of positive squares in 2 ways, for example, as 193845597841 + 17311454329 = 440279^2 + 131573^2 .

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

It is a super-2 number, since 2×211157052170² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10557852599 + ... + 10557852618.

Almost surely, 2^211157052170 is an apocalyptic number.

211157052170 is a deficient number, since it is larger than the sum of its proper divisors (168925641754).

211157052170 is a wasteful number, since it uses less digits than its factorization.

211157052170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21115705224.

The product of its (nonzero) digits is 4900, while the sum is 32.

The spelling of 211157052170 in words is "two hundred eleven billion, one hundred fifty-seven million, fifty-two thousand, one hundred seventy".