121301311331 has 4 divisors (see below), whose sum is σ = 125484115200. Its totient is φ = 117118507464.

The previous prime is 121301311321. The next prime is 121301311333. The reversal of 121301311331 is 133113103121.

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 121301311331 - 2¹⁰ = 121301310307 is a prime.

It is a super-2 number, since 2×121301311331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121301311333) 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, 2091401891 + ... + 2091401948.

It is an arithmetic number, because the mean of its divisors is an integer number (31371028800).

Almost surely, 2^121301311331 is an apocalyptic number.

121301311331 is a deficient number, since it is larger than the sum of its proper divisors (4182803869).

121301311331 is an equidigital number, since it uses as much as digits as its factorization.

121301311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4182803868.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 121301311331 its reverse (133113103121), we get a palindrome (254414414452).

The spelling of 121301311331 in words is "one hundred twenty-one billion, three hundred one million, three hundred eleven thousand, three hundred thirty-one".