2131224033121 has 2 divisors, whose sum is σ = 2131224033122. Its totient is φ = 2131224033120.

The previous prime is 2131224033097. The next prime is 2131224033143. The reversal of 2131224033121 is 1213304221312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1904852666896 + 226371366225 = 1380164^2 + 475785^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131224033121 - 2⁵ = 2131224033089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131224063121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065612016560 + 1065612016561.

It is an arithmetic number, because the mean of its divisors is an integer number (1065612016561).

Almost surely, 2^{2131224033121} is an apocalyptic number.

It is an amenable number.

2131224033121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131224033121 is an equidigital number, since it uses as much as digits as its factorization.

2131224033121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2131224033121 its reverse (1213304221312), we get a palindrome (3344528254433).

The spelling of 2131224033121 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-four million, thirty-three thousand, one hundred twenty-one".