2141521231 has 2 divisors, whose sum is σ = 2141521232. Its totient is φ = 2141521230.

The previous prime is 2141521183. The next prime is 2141521253. The reversal of 2141521231 is 1321251412.

It is an a-pointer prime, because the next prime (2141521253) can be obtained adding 2141521231 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2141521231 - 2¹¹ = 2141519183 is a prime.

It is a super-2 number, since 2×2141521231² = 9172226365647510722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141521271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070760615 + 1070760616.

It is an arithmetic number, because the mean of its divisors is an integer number (1070760616).

Almost surely, 2^2141521231 is an apocalyptic number.

2141521231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141521231 is an equidigital number, since it uses as much as digits as its factorization.

2141521231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 2141521231 is about 46276.5732417602. The cubic root of 2141521231 is about 1288.9640203151.

Adding to 2141521231 its reverse (1321251412), we get a palindrome (3462772643).

The spelling of 2141521231 in words is "two billion, one hundred forty-one million, five hundred twenty-one thousand, two hundred thirty-one".