212022188874 has 128 divisors (see below), whose sum is σ = 502677342720. Its totient is φ = 66093401088.

The previous prime is 212022188789. The next prime is 212022188879. The reversal of 212022188874 is 478881220212.

212022188874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212022188879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19281522 + ... + 19292514.

It is an arithmetic number, because the mean of its divisors is an integer number (3927166740).

Almost surely, 2^212022188874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212022188874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251338671360).

212022188874 is an abundant number, since it is smaller than the sum of its proper divisors (290655153846).

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

212022188874 is a wasteful number, since it uses less digits than its factorization.

212022188874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11373 (or 11367 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The spelling of 212022188874 in words is "two hundred twelve billion, twenty-two million, one hundred eighty-eight thousand, eight hundred seventy-four".