2131140101221 has 4 divisors (see below), whose sum is σ = 2137948855852. Its totient is φ = 2124331346592.

The previous prime is 2131140101201. The next prime is 2131140101261. The reversal of 2131140101221 is 1221010411312.

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 54457356321 + 2076682744900 = 233361^2 + 1441070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131140101221 - 2³⁹ = 1581384287333 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 (2131140101201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3404376846 + ... + 3404377471.

It is an arithmetic number, because the mean of its divisors is an integer number (534487213963).

Almost surely, 2^{2131140101221} is an apocalyptic number.

It is an amenable number.

2131140101221 is a deficient number, since it is larger than the sum of its proper divisors (6808754631).

2131140101221 is an equidigital number, since it uses as much as digits as its factorization.

2131140101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808754630.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2131140101221 its reverse (1221010411312), we get a palindrome (3352150512533).

The spelling of 2131140101221 in words is "two trillion, one hundred thirty-one billion, one hundred forty million, one hundred one thousand, two hundred twenty-one".