121131355 has 8 divisors (see below), whose sum is σ = 145554192. Its totient is φ = 96774048.

The previous prime is 121131349. The next prime is 121131371. The reversal of 121131355 is 553131121.

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 121131355 - 2⁵ = 121131323 is a prime.

It is a Duffinian number.

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, 12217 + ... + 19786.

It is an arithmetic number, because the mean of its divisors is an integer number (18194274).

Almost surely, 2^121131355 is an apocalyptic number.

121131355 is a deficient number, since it is larger than the sum of its proper divisors (24422837).

121131355 is an equidigital number, since it uses as much as digits as its factorization.

121131355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32765.

The product of its digits is 450, while the sum is 22.

The square root of 121131355 is about 11005.9690622862. The cubic root of 121131355 is about 494.7876584737.

Adding to 121131355 its reverse (553131121), we get a palindrome (674262476).

The spelling of 121131355 in words is "one hundred twenty-one million, one hundred thirty-one thousand, three hundred fifty-five".