121017399 has 8 divisors (see below), whose sum is σ = 161438592. Its totient is φ = 80637240.

The previous prime is 121017383. The next prime is 121017401. The reversal of 121017399 is 993710121.

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

It is not a de Polignac number, because 121017399 - 2⁴ = 121017383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121017349) 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, 2547 + ... + 15764.

It is an arithmetic number, because the mean of its divisors is an integer number (20179824).

Almost surely, 2^121017399 is an apocalyptic number.

121017399 is a deficient number, since it is larger than the sum of its proper divisors (40421193).

121017399 is a wasteful number, since it uses less digits than its factorization.

121017399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20517.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 121017399 is about 11000.7908352082. The cubic root of 121017399 is about 494.6324503444.

The spelling of 121017399 in words is "one hundred twenty-one million, seventeen thousand, three hundred ninety-nine".