121131130 has 16 divisors (see below), whose sum is σ = 221732640. Its totient is φ = 47630992.

The previous prime is 121131121. The next prime is 121131149. The reversal of 121131130 is 31131121.

It is a self number, because there is not a number n which added to its sum of digits gives 121131130.

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 7 ways as a sum of consecutive naturals, for example, 102064 + ... + 103243.

It is an arithmetic number, because the mean of its divisors is an integer number (13858290).

Almost surely, 2^121131130 is an apocalyptic number.

121131130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121131130 is a deficient number, since it is larger than the sum of its proper divisors (100601510).

121131130 is a wasteful number, since it uses less digits than its factorization.

121131130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205373.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 121131130 is about 11005.9588405554. The cubic root of 121131130 is about 494.7873521195.

Adding to 121131130 its reverse (31131121), we get a palindrome (152262251).

Subtracting from 121131130 its reverse (31131121), we obtain a palindrome (90000009).

The spelling of 121131130 in words is "one hundred twenty-one million, one hundred thirty-one thousand, one hundred thirty".