121355363 has 4 divisors (see below), whose sum is σ = 123937440. Its totient is φ = 118773288.

The previous prime is 121355347. The next prime is 121355371. The reversal of 121355363 is 363553121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363553121 = 127 ⋅2862623.

It is a cyclic number.

It is not a de Polignac number, because 121355363 - 2⁴ = 121355347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121355323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290968 + ... + 1291061.

It is an arithmetic number, because the mean of its divisors is an integer number (30984360).

Almost surely, 2^121355363 is an apocalyptic number.

121355363 is a deficient number, since it is larger than the sum of its proper divisors (2582077).

121355363 is an equidigital number, since it uses as much as digits as its factorization.

121355363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582076.

The product of its digits is 8100, while the sum is 29.

The square root of 121355363 is about 11016.1410212470. The cubic root of 121355363 is about 495.0924739657.

The spelling of 121355363 in words is "one hundred twenty-one million, three hundred fifty-five thousand, three hundred sixty-three".