2231130021121 has 2 divisors, whose sum is σ = 2231130021122. Its totient is φ = 2231130021120.

The previous prime is 2231130021119. The next prime is 2231130021163. The reversal of 2231130021121 is 1211200311322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1817373610000 + 413756411121 = 1348100^2 + 643239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2231130021121 - 2¹ = 2231130021119 is a prime.

It is a super-3 number, since 3×2231130021121³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 2231130021119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2231130021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115565010560 + 1115565010561.

It is an arithmetic number, because the mean of its divisors is an integer number (1115565010561).

Almost surely, 2^{2231130021121} is an apocalyptic number.

It is an amenable number.

2231130021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231130021121 is an equidigital number, since it uses as much as digits as its factorization.

2231130021121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2231130021121 its reverse (1211200311322), we get a palindrome (3442330332443).

The spelling of 2231130021121 in words is "two trillion, two hundred thirty-one billion, one hundred thirty million, twenty-one thousand, one hundred twenty-one".