121361355 has 32 divisors (see below), whose sum is σ = 218373120. Its totient is φ = 63940320.

The previous prime is 121361347. The next prime is 121361381. The reversal of 121361355 is 553163121.

It is not a de Polignac number, because 121361355 - 2³ = 121361347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5790 + ... + 16620.

It is an arithmetic number, because the mean of its divisors is an integer number (6824160).

Almost surely, 2^121361355 is an apocalyptic number.

121361355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121361355 is a deficient number, since it is larger than the sum of its proper divisors (97011765).

121361355 is a wasteful number, since it uses less digits than its factorization.

121361355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928 (or 10922 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 121361355 is about 11016.4129824549. The cubic root of 121361355 is about 495.1006223359.

The spelling of 121361355 in words is "one hundred twenty-one million, three hundred sixty-one thousand, three hundred fifty-five".