121644851 has 8 divisors (see below), whose sum is σ = 122767008. Its totient is φ = 120528000.

The previous prime is 121644847. The next prime is 121644857. The reversal of 121644851 is 158446121.

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 121644851 - 2² = 121644847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121644857) 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, 55211 + ... + 57371.

It is an arithmetic number, because the mean of its divisors is an integer number (15345876).

Almost surely, 2^121644851 is an apocalyptic number.

121644851 is a deficient number, since it is larger than the sum of its proper divisors (1122157).

121644851 is a wasteful number, since it uses less digits than its factorization.

121644851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653.

The product of its digits is 7680, while the sum is 32.

The square root of 121644851 is about 11029.2724601399. The cubic root of 121644851 is about 495.4858352848.

The spelling of 121644851 in words is "one hundred twenty-one million, six hundred forty-four thousand, eight hundred fifty-one".