2311302312121 has 6 divisors (see below), whose sum is σ = 2540522376266. Its totient is φ = 2101183920000.

The previous prime is 2311302312103. The next prime is 2311302312149. The reversal of 2311302312121 is 1212132031132.

It can be written as a sum of positive squares in only one way, i.e., 2188757508025 + 122544804096 = 1479445^2 + 350064^2 .

It is not a de Polignac number, because 2311302312121 - 2⁵ = 2311302312089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311302312092 and 2311302312101.

It is not an unprimeable number, because it can be changed into a prime (2311302312191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9550835880 + ... + 9550836121.

Almost surely, 2^{2311302312121} is an apocalyptic number.

It is an amenable number.

2311302312121 is a deficient number, since it is larger than the sum of its proper divisors (229220064145).

2311302312121 is a wasteful number, since it uses less digits than its factorization.

2311302312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19101672023 (or 19101672012 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2311302312121 its reverse (1212132031132), we get a palindrome (3523434343253).

The spelling of 2311302312121 in words is "two trillion, three hundred eleven billion, three hundred two million, three hundred twelve thousand, one hundred twenty-one".