211670620222051 has 32 divisors (see below), whose sum is σ = 222661974638592. Its totient is φ = 200832343034400.

The previous prime is 211670620222027. The next prime is 211670620222069. The reversal of 211670620222051 is 150222026076112.

It is a cyclic number.

It is not a de Polignac number, because 211670620222051 - 2⁷ = 211670620221923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211670620222051.

It is not an unprimeable number, because it can be changed into a prime (211670620228051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16929580266 + ... + 16929592768.

It is an arithmetic number, because the mean of its divisors is an integer number (6958186707456).

Almost surely, 2^{211670620222051} is an apocalyptic number.

211670620222051 is a deficient number, since it is larger than the sum of its proper divisors (10991354416541).

211670620222051 is a wasteful number, since it uses less digits than its factorization.

211670620222051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19423.

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 211670620222051 its reverse (150222026076112), we get a palindrome (361892646298163).

The spelling of 211670620222051 in words is "two hundred eleven trillion, six hundred seventy billion, six hundred twenty million, two hundred twenty-two thousand, fifty-one".