121032220 has 12 divisors (see below), whose sum is σ = 254167704. Its totient is φ = 48412880.

The previous prime is 121032211. The next prime is 121032271. The reversal of 121032220 is 22230121.

It is a self number, because there is not a number n which added to its sum of digits gives 121032220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025786 + ... + 3025825.

It is an arithmetic number, because the mean of its divisors is an integer number (21180642).

Almost surely, 2^121032220 is an apocalyptic number.

121032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121032220 is an abundant number, since it is smaller than the sum of its proper divisors (133135484).

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

121032220 is a wasteful number, since it uses less digits than its factorization.

121032220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051620 (or 6051618 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 121032220 is about 11001.4644479724. The cubic root of 121032220 is about 494.6526420644.

Adding to 121032220 its reverse (22230121), we get a palindrome (143262341).

The spelling of 121032220 in words is "one hundred twenty-one million, thirty-two thousand, two hundred twenty".