2221231331131 has 4 divisors (see below), whose sum is σ = 2223411147000. Its totient is φ = 2219051515264.

The previous prime is 2221231331101. The next prime is 2221231331149. The reversal of 2221231331131 is 1311331321222.

2221231331131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221231331131 is a prime.

It is a super-2 number, since 2×2221231331131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221231331096 and 2221231331105.

It is not an unprimeable number, because it can be changed into a prime (2221231331101) 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, 1089906406 + ... + 1089908443.

It is an arithmetic number, because the mean of its divisors is an integer number (555852786750).

Almost surely, 2^{2221231331131} is an apocalyptic number.

2221231331131 is a deficient number, since it is larger than the sum of its proper divisors (2179815869).

2221231331131 is a wasteful number, since it uses less digits than its factorization.

2221231331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179815868.

The product of its digits is 1296, while the sum is 25.

Adding to 2221231331131 its reverse (1311331321222), we get a palindrome (3532562652353).

Subtracting from 2221231331131 its reverse (1311331321222), we obtain a palindrome (909900009909).

The spelling of 2221231331131 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-one million, three hundred thirty-one thousand, one hundred thirty-one".