2122220 has 24 divisors (see below), whose sum is σ = 4611600. Its totient is φ = 819392.

The previous prime is 2122213. The next prime is 2122231. The reversal of 2122220 is 222212.

2122220 = T₂₄₁ + T₂₄₂ + ... + T₂₉₈.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (192150).

2^2122220 is an apocalyptic number.

2122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122220 is an abundant number, since it is smaller than the sum of its proper divisors (2489380).

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

2122220 is a wasteful number, since it uses less digits than its factorization.

2122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2122220 is about 1456.7841295127. The cubic root of 2122220 is about 128.5079910447.

Adding to 2122220 its reverse (222212), we get a palindrome (2344432).

The spelling of 2122220 in words is "two million, one hundred twenty-two thousand, two hundred twenty".