121555346 has 16 divisors (see below), whose sum is σ = 199692000. Its totient is φ = 55034880.

The previous prime is 121555333. The next prime is 121555349. The reversal of 121555346 is 643555121.

It is not an unprimeable number, because it can be changed into a prime (121555349) 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, 5096 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (12480750).

Almost surely, 2^121555346 is an apocalyptic number.

121555346 is a deficient number, since it is larger than the sum of its proper divisors (78136654).

121555346 is a wasteful number, since it uses less digits than its factorization.

121555346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21769.

The product of its digits is 18000, while the sum is 32.

The square root of 121555346 is about 11025.2141022295. The cubic root of 121555346 is about 495.3642810477.

The spelling of 121555346 in words is "one hundred twenty-one million, five hundred fifty-five thousand, three hundred forty-six".