220121221011102 has 64 divisors (see below), whose sum is σ = 489467274336000. Its totient is φ = 73327395506400.

The previous prime is 220121221011077. The next prime is 220121221011121. The reversal of 220121221011102 is 201110122121022.

220121221011102 is a `hidden beast` number, since 220 + 1 + 212 + 210 + 11 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1476248352 + ... + 1476397452.

It is an arithmetic number, because the mean of its divisors is an integer number (7647926161500).

Almost surely, 2^{220121221011102} is an apocalyptic number.

220121221011102 is an abundant number, since it is smaller than the sum of its proper divisors (269346053324898).

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

220121221011102 is a wasteful number, since it uses less digits than its factorization.

220121221011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166198 (or 166192 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220121221011102 its reverse (201110122121022), we get a palindrome (421231343132124).

The spelling of 220121221011102 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty-one million, eleven thousand, one hundred two".