220121002222122 has 32 divisors (see below), whose sum is σ = 443721916408320. Its totient is φ = 72793983307760.

The previous prime is 220121002222097. The next prime is 220121002222139. The reversal of 220121002222122 is 221222200121022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34728408 + ... + 40574675.

It is an arithmetic number, because the mean of its divisors is an integer number (13866309887760).

Almost surely, 2^{220121002222122} is an apocalyptic number.

220121002222122 is an abundant number, since it is smaller than the sum of its proper divisors (223600914186198).

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

220121002222122 is a wasteful number, since it uses less digits than its factorization.

220121002222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75306938.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 220121002222122 its reverse (221222200121022), we get a palindrome (441343202343144).

The spelling of 220121002222122 in words is "two hundred twenty trillion, one hundred twenty-one billion, two million, two hundred twenty-two thousand, one hundred twenty-two".