211122212021958 has 64 divisors (see below), whose sum is σ = 442284191032320. Its totient is φ = 67114978732800.

The previous prime is 211122212021957. The next prime is 211122212022041. The reversal of 211122212021958 is 859120212221112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122212021957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1628188 + ... + 20612991.

It is an arithmetic number, because the mean of its divisors is an integer number (6910690484880).

Almost surely, 2^{211122212021958} is an apocalyptic number.

211122212021958 is an abundant number, since it is smaller than the sum of its proper divisors (231161979010362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211122212021958 is a wasteful number, since it uses less digits than its factorization.

211122212021958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22242093.

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 211122212021958 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, nine hundred fifty-eight".