121092220 has 24 divisors (see below), whose sum is σ = 254820384. Its totient is φ = 48336576.

The previous prime is 121092193. The next prime is 121092277. The reversal of 121092220 is 22290121.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4042 + ... + 16078.

It is an arithmetic number, because the mean of its divisors is an integer number (10617516).

Almost surely, 2^121092220 is an apocalyptic number.

121092220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121092220 is an abundant number, since it is smaller than the sum of its proper divisors (133728164).

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

121092220 is a wasteful number, since it uses less digits than its factorization.

121092220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12549 (or 12547 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 121092220 is about 11004.1910197888. The cubic root of 121092220 is about 494.7343675629.

The spelling of 121092220 in words is "one hundred twenty-one million, ninety-two thousand, two hundred twenty".