202201212121120 has 48 divisors (see below), whose sum is σ = 479476201521240. Its totient is φ = 80579813883904.

The previous prime is 202201212121099. The next prime is 202201212121157. The reversal of 202201212121120 is 21121212102202.

It can be written as a sum of positive squares in 4 ways, for example, as 131798573886736 + 70402638234384 = 11480356^2 + 8390628^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2348948737 + ... + 2349034816.

Almost surely, 2^{202201212121120} is an apocalyptic number.

202201212121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202201212121120 is an abundant number, since it is smaller than the sum of its proper divisors (277274989400120).

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

202201212121120 is a wasteful number, since it uses less digits than its factorization.

202201212121120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697983837 (or 4697983829 counting only the distinct ones).

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

Adding to 202201212121120 its reverse (21121212102202), we get a palindrome (223322424223322).

The spelling of 202201212121120 in words is "two hundred two trillion, two hundred one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty".