121110221121323 has 4 divisors (see below), whose sum is σ = 138411681281520. Its totient is φ = 103808760961128.

The previous prime is 121110221121287. The next prime is 121110221121361. The reversal of 121110221121323 is 323121122011121.

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 121110221121323 - 2⁸ = 121110221121067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121110221121023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8650730080088 + ... + 8650730080101.

It is an arithmetic number, because the mean of its divisors is an integer number (34602920320380).

Almost surely, 2^{121110221121323} is an apocalyptic number.

121110221121323 is a deficient number, since it is larger than the sum of its proper divisors (17301460160197).

121110221121323 is an equidigital number, since it uses as much as digits as its factorization.

121110221121323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17301460160196.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 121110221121323 its reverse (323121122011121), we get a palindrome (444231343132444).

The spelling of 121110221121323 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred twenty-three".