220212122 has 16 divisors (see below), whose sum is σ = 356658120. Its totient is φ = 101370432.

The previous prime is 220212121. The next prime is 220212151. The reversal of 220212122 is 221212022.

It can be written as a sum of positive squares in 4 ways, for example, as 78340201 + 141871921 = 8851^2 + 11911^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220212097 and 220212106.

It is not an unprimeable number, because it can be changed into a prime (220212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773 + ... + 21000.

Almost surely, 2^220212122 is an apocalyptic number.

220212122 is a deficient number, since it is larger than the sum of its proper divisors (136445998).

220212122 is a wasteful number, since it uses less digits than its factorization.

220212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22177.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 220212122 is about 14839.5458825397. The cubic root of 220212122 is about 603.8750326230.

Adding to 220212122 its reverse (221212022), we get a palindrome (441424144).

The spelling of 220212122 in words is "two hundred twenty million, two hundred twelve thousand, one hundred twenty-two".