121165633 has 8 divisors (see below), whose sum is σ = 126623808. Its totient is φ = 115723344.

The previous prime is 121165621. The next prime is 121165663. The reversal of 121165633 is 336561121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121165633 is a prime.

It is a super-2 number, since 2×121165633² = 29362221240581378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121165663) 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, 13266 + ... + 20452.

It is an arithmetic number, because the mean of its divisors is an integer number (15827976).

Almost surely, 2^121165633 is an apocalyptic number.

It is an amenable number.

121165633 is a deficient number, since it is larger than the sum of its proper divisors (5458175).

121165633 is an equidigital number, since it uses as much as digits as its factorization.

121165633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7943.

The product of its digits is 3240, while the sum is 28.

The square root of 121165633 is about 11007.5261980156. The cubic root of 121165633 is about 494.8343260817.

The spelling of 121165633 in words is "one hundred twenty-one million, one hundred sixty-five thousand, six hundred thirty-three".