2131041223556 has 24 divisors (see below), whose sum is σ = 4399568979456. Its totient is φ = 883841981760.

The previous prime is 2131041223537. The next prime is 2131041223573. The reversal of 2131041223556 is 6553221401312.

It is a super-3 number, since 3×2131041223556³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227557441 + ... + 1227559176.

It is an arithmetic number, because the mean of its divisors is an integer number (183315374144).

Almost surely, 2^{2131041223556} is an apocalyptic number.

It is an amenable number.

2131041223556 is an abundant number, since it is smaller than the sum of its proper divisors (2268527755900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131041223556 is a wasteful number, since it uses less digits than its factorization.

2131041223556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455116659 (or 2455116657 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 2131041223556 its reverse (6553221401312), we get a palindrome (8684262624868).

The spelling of 2131041223556 in words is "two trillion, one hundred thirty-one billion, forty-one million, two hundred twenty-three thousand, five hundred fifty-six".