121155355 has 8 divisors (see below), whose sum is σ = 145587600. Its totient is φ = 96790176.

The previous prime is 121155317. The next prime is 121155361. The reversal of 121155355 is 553551121.

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 121155355 - 2⁷ = 121155227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12700 + ... + 20089.

It is an arithmetic number, because the mean of its divisors is an integer number (18198450).

Almost surely, 2^121155355 is an apocalyptic number.

121155355 is a deficient number, since it is larger than the sum of its proper divisors (24432245).

121155355 is an equidigital number, since it uses as much as digits as its factorization.

121155355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33533.

The product of its digits is 3750, while the sum is 28.

The square root of 121155355 is about 11007.0593257237. The cubic root of 121155355 is about 494.8203340751.

The spelling of 121155355 in words is "one hundred twenty-one million, one hundred fifty-five thousand, three hundred fifty-five".