2122212180 has 48 divisors (see below), whose sum is σ = 6482395584. Its totient is φ = 514475520.

The previous prime is 2122212179. The next prime is 2122212227. The reversal of 2122212180 is 812122212.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1607077 + ... + 1608396.

It is an arithmetic number, because the mean of its divisors is an integer number (135049908).

Almost surely, 2^2122212180 is an apocalyptic number.

2122212180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122212180 is an abundant number, since it is smaller than the sum of its proper divisors (4360183404).

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

2122212180 is a wasteful number, since it uses less digits than its factorization.

2122212180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215496 (or 3215494 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 2122212180 is about 46067.4742090339. The cubic root of 2122212180 is about 1285.0783320152.

Adding to 2122212180 its reverse (812122212), we get a palindrome (2934334392).

The spelling of 2122212180 in words is "two billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eighty".