121161345 has 16 divisors (see below), whose sum is σ = 194208000. Its totient is φ = 64502784.

The previous prime is 121161281. The next prime is 121161367. The reversal of 121161345 is 543161121.

It is a happy number.

It is not a de Polignac number, because 121161345 - 2⁶ = 121161281 is a prime.

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, 1656 + ... + 15654.

It is an arithmetic number, because the mean of its divisors is an integer number (12138000).

Almost surely, 2^121161345 is an apocalyptic number.

121161345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121161345 is a deficient number, since it is larger than the sum of its proper divisors (73046655).

121161345 is a wasteful number, since it uses less digits than its factorization.

121161345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14584.

The product of its digits is 720, while the sum is 24.

The square root of 121161345 is about 11007.3314204670. The cubic root of 121161345 is about 494.8284886877.

The spelling of 121161345 in words is "one hundred twenty-one million, one hundred sixty-one thousand, three hundred forty-five".