2131204444111 has 8 divisors (see below), whose sum is σ = 2142458805248. Its totient is φ = 2119975011000.

The previous prime is 2131204444087. The next prime is 2131204444139. The reversal of 2131204444111 is 1114444021312.

It is a happy number.

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 2131204444111 - 2⁵ = 2131204444079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2131204444111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131204444711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6060555 + ... + 6402556.

It is an arithmetic number, because the mean of its divisors is an integer number (267807350656).

Almost surely, 2^{2131204444111} is an apocalyptic number.

2131204444111 is a deficient number, since it is larger than the sum of its proper divisors (11254361137).

2131204444111 is a wasteful number, since it uses less digits than its factorization.

2131204444111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12464013.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 2131204444111 its reverse (1114444021312), we get a palindrome (3245648465423).

It can be divided in two parts, 2131204 and 444111, that added together give a triangular number (2575315 = T₂₂₆₉).

The spelling of 2131204444111 in words is "two trillion, one hundred thirty-one billion, two hundred four million, four hundred forty-four thousand, one hundred eleven".