121052220 has 48 divisors (see below), whose sum is σ = 353687040. Its totient is φ = 30876736.

The previous prime is 121052201. The next prime is 121052227. The reversal of 121052220 is 22250121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121052220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121052227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42480 + ... + 45239.

It is an arithmetic number, because the mean of its divisors is an integer number (7368480).

Almost surely, 2^121052220 is an apocalyptic number.

121052220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121052220 is an abundant number, since it is smaller than the sum of its proper divisors (232634820).

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

121052220 is a wasteful number, since it uses less digits than its factorization.

121052220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87754 (or 87752 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 121052220 is about 11002.3733803212. The cubic root of 121052220 is about 494.6798868977.

The spelling of 121052220 in words is "one hundred twenty-one million, fifty-two thousand, two hundred twenty".