2131110331222 has 4 divisors (see below), whose sum is σ = 3196665496836. Its totient is φ = 1065555165610.

The previous prime is 2131110331127. The next prime is 2131110331241. The reversal of 2131110331222 is 2221330111312.

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

It is a super-2 number, since 2×2131110331222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131110331193 and 2131110331202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532777582804 + ... + 532777582807.

It is an arithmetic number, because the mean of its divisors is an integer number (799166374209).

Almost surely, 2^{2131110331222} is an apocalyptic number.

2131110331222 is a deficient number, since it is larger than the sum of its proper divisors (1065555165614).

2131110331222 is a wasteful number, since it uses less digits than its factorization.

2131110331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065555165613.

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

Adding to 2131110331222 its reverse (2221330111312), we get a palindrome (4352440442534).

The spelling of 2131110331222 in words is "two trillion, one hundred thirty-one billion, one hundred ten million, three hundred thirty-one thousand, two hundred twenty-two".