121554130 has 16 divisors (see below), whose sum is σ = 221880384. Its totient is φ = 47936560.

The previous prime is 121554127. The next prime is 121554133. The reversal of 121554130 is 31455121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121554127) and next prime (121554133).

It is not an unprimeable number, because it can be changed into a prime (121554133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84892 + ... + 86311.

It is an arithmetic number, because the mean of its divisors is an integer number (13867524).

Almost surely, 2^121554130 is an apocalyptic number.

121554130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121554130 is a deficient number, since it is larger than the sum of its proper divisors (100326254).

121554130 is a wasteful number, since it uses less digits than its factorization.

121554130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171281.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 121554130 is about 11025.1589557702. The cubic root of 121554130 is about 495.3626292214.

Subtracting from 121554130 its reverse (31455121), we obtain a palindrome (90099009).

The spelling of 121554130 in words is "one hundred twenty-one million, five hundred fifty-four thousand, one hundred thirty".