121635150221323 has 4 divisors (see below), whose sum is σ = 121636978755448. Its totient is φ = 121633321687200.

The previous prime is 121635150221309. The next prime is 121635150221393. The reversal of 121635150221323 is 323122051536121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121635150221323 - 2²⁵ = 121635116666891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121635150221303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914167278 + ... + 914300323.

It is an arithmetic number, because the mean of its divisors is an integer number (30409244688862).

Almost surely, 2^{121635150221323} is an apocalyptic number.

121635150221323 is a deficient number, since it is larger than the sum of its proper divisors (1828534125).

121635150221323 is an equidigital number, since it uses as much as digits as its factorization.

121635150221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828534124.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 121635150221323 in words is "one hundred twenty-one trillion, six hundred thirty-five billion, one hundred fifty million, two hundred twenty-one thousand, three hundred twenty-three".