21322310029 has 2 divisors, whose sum is σ = 21322310030. Its totient is φ = 21322310028.

The previous prime is 21322310003. The next prime is 21322310033. The reversal of 21322310029 is 92001322312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11040755625 + 10281554404 = 105075^2 + 101398^2 .

It is a cyclic number.

It is not a de Polignac number, because 21322310029 - 2⁵ = 21322309997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21322309985 and 21322310012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21322310039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10661155014 + 10661155015.

It is an arithmetic number, because the mean of its divisors is an integer number (10661155015).

Almost surely, 2^21322310029 is an apocalyptic number.

It is an amenable number.

21322310029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21322310029 is an equidigital number, since it uses as much as digits as its factorization.

21322310029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 21322310029 in words is "twenty-one billion, three hundred twenty-two million, three hundred ten thousand, twenty-nine".