121032921 has 8 divisors (see below), whose sum is σ = 166942080. Its totient is φ = 77906192.

The previous prime is 121032913. The next prime is 121032937. The reversal of 121032921 is 129230121.

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

It is a cyclic number.

It is not a de Polignac number, because 121032921 - 2³ = 121032913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (121032991) 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, 695505 + ... + 695678.

It is an arithmetic number, because the mean of its divisors is an integer number (20867760).

Almost surely, 2^121032921 is an apocalyptic number.

It is an amenable number.

121032921 is a deficient number, since it is larger than the sum of its proper divisors (45909159).

121032921 is a wasteful number, since it uses less digits than its factorization.

121032921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391215.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 121032921 is about 11001.4963073211. The cubic root of 121032921 is about 494.6535970465.

The spelling of 121032921 in words is "one hundred twenty-one million, thirty-two thousand, nine hundred twenty-one".