21232050331 has 2 divisors, whose sum is σ = 21232050332. Its totient is φ = 21232050330.

The previous prime is 21232050271. The next prime is 21232050337. The reversal of 21232050331 is 13305023212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21232050331 - 2²⁹ = 20695179419 is a prime.

It is a super-2 number, since 2×21232050331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21232050337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616025165 + 10616025166.

It is an arithmetic number, because the mean of its divisors is an integer number (10616025166).

Almost surely, 2^21232050331 is an apocalyptic number.

21232050331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232050331 is an equidigital number, since it uses as much as digits as its factorization.

21232050331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 21232050331 its reverse (13305023212), we get a palindrome (34537073543).

The spelling of 21232050331 in words is "twenty-one billion, two hundred thirty-two million, fifty thousand, three hundred thirty-one".