121857366 has 8 divisors (see below), whose sum is σ = 243714744. Its totient is φ = 40619120.

The previous prime is 121857347. The next prime is 121857401. The reversal of 121857366 is 663758121.

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

121857366 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10154775 + ... + 10154786.

It is an arithmetic number, because the mean of its divisors is an integer number (30464343).

Almost surely, 2^121857366 is an apocalyptic number.

121857366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121857366 is a wasteful number, since it uses less digits than its factorization.

121857366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20309566.

The product of its digits is 60480, while the sum is 39.

The square root of 121857366 is about 11038.9023910894. The cubic root of 121857366 is about 495.7742073006.

The spelling of 121857366 in words is "one hundred twenty-one million, eight hundred fifty-seven thousand, three hundred sixty-six".