2122196220 has 144 divisors (see below), whose sum is σ = 6839370720. Its totient is φ = 546287616.

The previous prime is 2122196147. The next prime is 2122196231. The reversal of 2122196220 is 226912212.

It is a happy number.

2122196220 is a `hidden beast` number, since 2 + 1 + 22 + 19 + 622 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 451804 + ... + 456476.

It is an arithmetic number, because the mean of its divisors is an integer number (47495630).

Almost surely, 2^2122196220 is an apocalyptic number.

2122196220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2122196220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3419685360).

2122196220 is an abundant number, since it is smaller than the sum of its proper divisors (4717174500).

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

2122196220 is a wasteful number, since it uses less digits than its factorization.

2122196220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749 (or 4712 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2122196220 is about 46067.3009845378. The cubic root of 2122196220 is about 1285.0751105495.

The spelling of 2122196220 in words is "two billion, one hundred twenty-two million, one hundred ninety-six thousand, two hundred twenty".