21323033223131 has 2 divisors, whose sum is σ = 21323033223132. Its totient is φ = 21323033223130.

The previous prime is 21323033223077. The next prime is 21323033223197. The reversal of 21323033223131 is 13132233032312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21323033223131 - 2⁶ = 21323033223067 is a prime.

It is a super-2 number, since 2×21323033223131² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21323033223094 and 21323033223103.

It is not a weakly prime, because it can be changed into another prime (21323033223731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661516611565 + 10661516611566.

It is an arithmetic number, because the mean of its divisors is an integer number (10661516611566).

Almost surely, 2^{21323033223131} is an apocalyptic number.

21323033223131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323033223131 is an equidigital number, since it uses as much as digits as its factorization.

21323033223131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 21323033223131 its reverse (13132233032312), we get a palindrome (34455266255443).

The spelling of 21323033223131 in words is "twenty-one trillion, three hundred twenty-three billion, thirty-three million, two hundred twenty-three thousand, one hundred thirty-one".