220121002122 has 32 divisors (see below), whose sum is σ = 504924257664. Its totient is φ = 62667897600.

The previous prime is 220121002109. The next prime is 220121002181. The reversal of 220121002122 is 221200121022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9313779 + ... + 9337382.

It is an arithmetic number, because the mean of its divisors is an integer number (15778883052).

Almost surely, 2^220121002122 is an apocalyptic number.

220121002122 is an abundant number, since it is smaller than the sum of its proper divisors (284803255542).

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

220121002122 is a wasteful number, since it uses less digits than its factorization.

220121002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18651454.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220121002122 its reverse (221200121022), we get a palindrome (441321123144).

The spelling of 220121002122 in words is "two hundred twenty billion, one hundred twenty-one million, two thousand, one hundred twenty-two".