2131020111133 has 4 divisors (see below), whose sum is σ = 2137126186300. Its totient is φ = 2124914035968.

The previous prime is 2131020111131. The next prime is 2131020111203. The reversal of 2131020111133 is 3311110201312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 766111577284 + 1364908533849 = 875278^2 + 1168293^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131020111133 - 2¹ = 2131020111131 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 2131020111133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131020111131) 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, 3053037060 + ... + 3053037757.

It is an arithmetic number, because the mean of its divisors is an integer number (534281546575).

Almost surely, 2^{2131020111133} is an apocalyptic number.

It is an amenable number.

2131020111133 is a deficient number, since it is larger than the sum of its proper divisors (6106075167).

2131020111133 is an equidigital number, since it uses as much as digits as its factorization.

2131020111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106075166.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2131020111133 its reverse (3311110201312), we get a palindrome (5442130312445).

The spelling of 2131020111133 in words is "two trillion, one hundred thirty-one billion, twenty million, one hundred eleven thousand, one hundred thirty-three".