2131133112021 has 4 divisors (see below), whose sum is σ = 2841510816032. Its totient is φ = 1420755408012.

The previous prime is 2131133111971. The next prime is 2131133112037. The reversal of 2131133112021 is 1202113311312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2131133112021 - 2¹³ = 2131133103829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131133112071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355188852001 + ... + 355188852006.

It is an arithmetic number, because the mean of its divisors is an integer number (710377704008).

Almost surely, 2^{2131133112021} is an apocalyptic number.

It is an amenable number.

2131133112021 is a deficient number, since it is larger than the sum of its proper divisors (710377704011).

2131133112021 is an equidigital number, since it uses as much as digits as its factorization.

2131133112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710377704010.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 2131133112021 its reverse (1202113311312), we get a palindrome (3333246423333).

The spelling of 2131133112021 in words is "two trillion, one hundred thirty-one billion, one hundred thirty-three million, one hundred twelve thousand, twenty-one".