121172402 has 16 divisors (see below), whose sum is σ = 196627200. Its totient is φ = 55672272.

The previous prime is 121172383. The next prime is 121172419. The reversal of 121172402 is 204271121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4652 + ... + 16247.

It is an arithmetic number, because the mean of its divisors is an integer number (12289200).

Almost surely, 2^121172402 is an apocalyptic number.

121172402 is a deficient number, since it is larger than the sum of its proper divisors (75454798).

121172402 is a wasteful number, since it uses less digits than its factorization.

121172402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21137.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 121172402 is about 11007.8336651677. The cubic root of 121172402 is about 494.8435406615.

The spelling of 121172402 in words is "one hundred twenty-one million, one hundred seventy-two thousand, four hundred two".