121110139 has 8 divisors (see below), whose sum is σ = 126090080. Its totient is φ = 116220096.

The previous prime is 121110137. The next prime is 121110163. The reversal of 121110139 is 931011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121110139 - 2¹ = 121110137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121110137) 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, 19719 + ... + 25120.

It is an arithmetic number, because the mean of its divisors is an integer number (15761260).

Almost surely, 2^121110139 is an apocalyptic number.

121110139 is a deficient number, since it is larger than the sum of its proper divisors (4979941).

121110139 is an equidigital number, since it uses as much as digits as its factorization.

121110139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44949.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 121110139 is about 11005.0051794627. The cubic root of 121110139 is about 494.7587696477.

The spelling of 121110139 in words is "one hundred twenty-one million, one hundred ten thousand, one hundred thirty-nine".