121232130 has 32 divisors (see below), whose sum is σ = 291816000. Its totient is φ = 32233152.

The previous prime is 121232123. The next prime is 121232143. The reversal of 121232130 is 31232121.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4681 + ... + 16259.

It is an arithmetic number, because the mean of its divisors is an integer number (9119250).

Almost surely, 2^121232130 is an apocalyptic number.

121232130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121232130 is an abundant number, since it is smaller than the sum of its proper divisors (170583870).

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

121232130 is a wasteful number, since it uses less digits than its factorization.

121232130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11938.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121232130 is about 11010.5463079722. The cubic root of 121232130 is about 494.9248329899.

Adding to 121232130 its reverse (31232121), we get a palindrome (152464251).

Subtracting from 121232130 its reverse (31232121), we obtain a palindrome (90000009).

The spelling of 121232130 in words is "one hundred twenty-one million, two hundred thirty-two thousand, one hundred thirty".