121154666 has 8 divisors (see below), whose sum is σ = 181915140. Its totient is φ = 60516288.

The previous prime is 121154647. The next prime is 121154689. The reversal of 121154666 is 666451121.

It can be written as a sum of positive squares in 2 ways, for example, as 120538441 + 616225 = 10979^2 + 785^2 .

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

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, 28001 + ... + 32036.

Almost surely, 2^121154666 is an apocalyptic number.

121154666 is a deficient number, since it is larger than the sum of its proper divisors (60760474).

121154666 is a wasteful number, since it uses less digits than its factorization.

121154666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61048.

The product of its digits is 8640, while the sum is 32.

The square root of 121154666 is about 11007.0280275831. The cubic root of 121154666 is about 494.8193960732.

The spelling of 121154666 in words is "one hundred twenty-one million, one hundred fifty-four thousand, six hundred sixty-six".