2122188 has 12 divisors (see below), whose sum is σ = 4951800. Its totient is φ = 707392.

The previous prime is 2122181. The next prime is 2122189. The reversal of 2122188 is 8812212.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2122181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88413 + ... + 88436.

It is an arithmetic number, because the mean of its divisors is an integer number (412650).

2^2122188 is an apocalyptic number.

It is an amenable number.

2122188 is an abundant number, since it is smaller than the sum of its proper divisors (2829612).

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

2122188 is a wasteful number, since it uses less digits than its factorization.

2122188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176856 (or 176854 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 2122188 is about 1456.7731463752. The cubic root of 2122188 is about 128.5073451367.

Adding to 2122188 its sum of digits (24), we get a palindrome (2122212).

It can be divided in two parts, 212218 and 8, that added together give a triangular number (212226 = T₆₅₁).

The spelling of 2122188 in words is "two million, one hundred twenty-two thousand, one hundred eighty-eight".