121323134334431 has 4 divisors (see below), whose sum is σ = 121324971599832. Its totient is φ = 121321297069032.

The previous prime is 121323134334421. The next prime is 121323134334539. The reversal of 121323134334431 is 134433431323121.

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 121323134334431 - 2¹⁴ = 121323134318047 is a prime.

It is a super-2 number, since 2×121323134334431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121323134334421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918533645 + ... + 918665718.

It is an arithmetic number, because the mean of its divisors is an integer number (30331242899958).

Almost surely, 2^{121323134334431} is an apocalyptic number.

121323134334431 is a deficient number, since it is larger than the sum of its proper divisors (1837265401).

121323134334431 is an equidigital number, since it uses as much as digits as its factorization.

121323134334431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1837265400.

The product of its digits is 186624, while the sum is 38.

Adding to 121323134334431 its reverse (134433431323121), we get a palindrome (255756565657552).

The spelling of 121323134334431 in words is "one hundred twenty-one trillion, three hundred twenty-three billion, one hundred thirty-four million, three hundred thirty-four thousand, four hundred thirty-one".