121553233 has 8 divisors (see below), whose sum is σ = 127169280. Its totient is φ = 116063520.

The previous prime is 121553231. The next prime is 121553261. The reversal of 121553233 is 332355121.

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 121553233 - 2¹ = 121553231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121553198 and 121553207.

It is not an unprimeable number, because it can be changed into a prime (121553231) 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, 29613 + ... + 33466.

It is an arithmetic number, because the mean of its divisors is an integer number (15896160).

Almost surely, 2^121553233 is an apocalyptic number.

It is an amenable number.

121553233 is a deficient number, since it is larger than the sum of its proper divisors (5616047).

121553233 is an equidigital number, since it uses as much as digits as its factorization.

121553233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63167.

The product of its digits is 2700, while the sum is 25.

The square root of 121553233 is about 11025.1182760096. The cubic root of 121553233 is about 495.3614107207.

The spelling of 121553233 in words is "one hundred twenty-one million, five hundred fifty-three thousand, two hundred thirty-three".