220031122 has 4 divisors (see below), whose sum is σ = 330046686. Its totient is φ = 110015560.

The previous prime is 220031117. The next prime is 220031159. The reversal of 220031122 is 221130022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221130022 = 2 ⋅110565011.

It can be written as a sum of positive squares in only one way, i.e., 199063881 + 20967241 = 14109^2 + 4579^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55007779 + ... + 55007782.

Almost surely, 2^220031122 is an apocalyptic number.

220031122 is a deficient number, since it is larger than the sum of its proper divisors (110015564).

220031122 is a wasteful number, since it uses less digits than its factorization.

220031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110015563.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 220031122 is about 14833.4460594968. The cubic root of 220031122 is about 603.7095386442.

Adding to 220031122 its reverse (221130022), we get a palindrome (441161144).

The spelling of 220031122 in words is "two hundred twenty million, thirty-one thousand, one hundred twenty-two".