211222102201992 has 128 divisors (see below), whose sum is σ = 670549956249600. Its totient is φ = 60348848053824.

The previous prime is 211222102201991. The next prime is 211222102202051. The reversal of 211222102201992 is 299102201222112.

211222102201992 is a `hidden beast` number, since 2 + 1 + 122 + 210 + 220 + 19 + 92 = 666.

It is a super-2 number, since 2×211222102201992² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (211222102201991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520655533 + ... + 521061059.

It is an arithmetic number, because the mean of its divisors is an integer number (5238671533200).

Almost surely, 2^{211222102201992} is an apocalyptic number.

It is an amenable number.

211222102201992 is an abundant number, since it is smaller than the sum of its proper divisors (459327854047608).

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

211222102201992 is a wasteful number, since it uses less digits than its factorization.

211222102201992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750032 (or 750022 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 211222102201992 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, two hundred one thousand, nine hundred ninety-two".