121451208 has 16 divisors (see below), whose sum is σ = 303628080. Its totient is φ = 40483728.

The previous prime is 121451191. The next prime is 121451219. The reversal of 121451208 is 802154121.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 5060467 = 121451208 / (1 + 2 + 1 + 4 + 5 + 1 + 2 + 0 + 8).

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, 2530210 + ... + 2530257.

It is an arithmetic number, because the mean of its divisors is an integer number (18976755).

Almost surely, 2^121451208 is an apocalyptic number.

It is an amenable number.

121451208 is an abundant number, since it is smaller than the sum of its proper divisors (182176872).

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

121451208 is a wasteful number, since it uses less digits than its factorization.

121451208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060476 (or 5060472 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 121451208 is about 11020.4903702149. The cubic root of 121451208 is about 495.2227790194. Note that the first 3 decimals are identical.

The spelling of 121451208 in words is "one hundred twenty-one million, four hundred fifty-one thousand, two hundred eight".