220121122210120 has 128 divisors (see below), whose sum is σ = 497731254300000. Its totient is φ = 87612594388992.

The previous prime is 220121122210061. The next prime is 220121122210133. The reversal of 220121122210120 is 21012221121022.

It can be written as a sum of positive squares in 16 ways, for example, as 107646061568644 + 112475060641476 = 10375262^2 + 10605426^2 .

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 31 ways as a sum of consecutive naturals, for example, 14084138466 + ... + 14084154094.

Almost surely, 2^{220121122210120} is an apocalyptic number.

220121122210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121122210120 is an abundant number, since it is smaller than the sum of its proper divisors (277610132089880).

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

220121122210120 is a wasteful number, since it uses less digits than its factorization.

220121122210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18035 (or 18031 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220121122210120 its reverse (21012221121022), we get a palindrome (241133343331142).

The spelling of 220121122210120 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, one hundred twenty".