2311331220121 has 8 divisors (see below), whose sum is σ = 2881659703104. Its totient is φ = 1801037314320.

The previous prime is 2311331220109. The next prime is 2311331220151. The reversal of 2311331220121 is 1210221331132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2311331220121 - 2³¹ = 2309183736473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311331220092 and 2311331220101.

It is not an unprimeable number, because it can be changed into a prime (2311331220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15008644210 + ... + 15008644363.

It is an arithmetic number, because the mean of its divisors is an integer number (360207462888).

Almost surely, 2^{2311331220121} is an apocalyptic number.

It is an amenable number.

2311331220121 is a deficient number, since it is larger than the sum of its proper divisors (570328482983).

2311331220121 is a wasteful number, since it uses less digits than its factorization.

2311331220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30017288591.

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

Adding to 2311331220121 its reverse (1210221331132), we get a palindrome (3521552551253).

The spelling of 2311331220121 in words is "two trillion, three hundred eleven billion, three hundred thirty-one million, two hundred twenty thousand, one hundred twenty-one".