121220130 has 32 divisors (see below), whose sum is σ = 291283200. Its totient is φ = 32285952.

The previous prime is 121220117. The next prime is 121220147. The reversal of 121220130 is 31022121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29226 + ... + 33114.

It is an arithmetic number, because the mean of its divisors is an integer number (9102600).

Almost surely, 2^121220130 is an apocalyptic number.

121220130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220130 is an abundant number, since it is smaller than the sum of its proper divisors (170063070).

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

121220130 is a wasteful number, since it uses less digits than its factorization.

121220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121220130 is about 11010.0013623977. The cubic root of 121220130 is about 494.9085026272.

Adding to 121220130 its reverse (31022121), we get a palindrome (152242251).

The spelling of 121220130 in words is "one hundred twenty-one million, two hundred twenty thousand, one hundred thirty".