121334131223 has 4 divisors (see below), whose sum is σ = 125248135488. Its totient is φ = 117420126960.

The previous prime is 121334131159. The next prime is 121334131273. The reversal of 121334131223 is 322131433121.

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 121334131223 - 2⁶ = 121334131159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121334131192 and 121334131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121334131273) 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, 1957002086 + ... + 1957002147.

It is an arithmetic number, because the mean of its divisors is an integer number (31312033872).

Almost surely, 2^121334131223 is an apocalyptic number.

121334131223 is a deficient number, since it is larger than the sum of its proper divisors (3914004265).

121334131223 is an equidigital number, since it uses as much as digits as its factorization.

121334131223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3914004264.

The product of its digits is 2592, while the sum is 26.

Adding to 121334131223 its reverse (322131433121), we get a palindrome (443465564344).

The spelling of 121334131223 in words is "one hundred twenty-one billion, three hundred thirty-four million, one hundred thirty-one thousand, two hundred twenty-three".