2121352231 has 2 divisors, whose sum is σ = 2121352232. Its totient is φ = 2121352230.

The previous prime is 2121352213. The next prime is 2121352249. The reversal of 2121352231 is 1322531212.

Together with previous prime (2121352213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (2121352213) and next prime (2121352249).

It is a cyclic number.

It is not a de Polignac number, because 2121352231 - 2⁵ = 2121352199 is a prime.

It is a super-2 number, since 2×2121352231² = 9000270575937354722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121355231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060676115 + 1060676116.

It is an arithmetic number, because the mean of its divisors is an integer number (1060676116).

Almost surely, 2^2121352231 is an apocalyptic number.

2121352231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121352231 is an equidigital number, since it uses as much as digits as its factorization.

2121352231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 2121352231 is about 46058.1396823623. The cubic root of 2121352231 is about 1284.9047315402.

Adding to 2121352231 its reverse (1322531212), we get a palindrome (3443883443).

The spelling of 2121352231 in words is "two billion, one hundred twenty-one million, three hundred fifty-two thousand, two hundred thirty-one".