2321211111131 has 32 divisors (see below), whose sum is σ = 2673761875200. Its totient is φ = 1992942506880.

The previous prime is 2321211111101. The next prime is 2321211111199. The reversal of 2321211111131 is 1311111121232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321211111131 is a prime.

It is a super-2 number, since 2×2321211111131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321211111101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181863956 + ... + 181876718.

It is an arithmetic number, because the mean of its divisors is an integer number (83555058600).

Almost surely, 2^{2321211111131} is an apocalyptic number.

2321211111131 is a deficient number, since it is larger than the sum of its proper divisors (352550764069).

2321211111131 is a wasteful number, since it uses less digits than its factorization.

2321211111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419.

The product of its digits is 72, while the sum is 20.

Adding to 2321211111131 its reverse (1311111121232), we get a palindrome (3632322232363).

It can be divided in two parts, 2321211 and 111131, that added together give a palindrome (2432342).

The spelling of 2321211111131 in words is "two trillion, three hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred thirty-one".