21122330029 has 2 divisors, whose sum is σ = 21122330030. Its totient is φ = 21122330028.

The previous prime is 21122330027. The next prime is 21122330057. The reversal of 21122330029 is 92003322112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12972754404 + 8149575625 = 113898^2 + 90275^2 .

It is a cyclic number.

It is not a de Polignac number, because 21122330029 - 2¹ = 21122330027 is a prime.

Together with 21122330027, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 21122329985 and 21122330012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122330027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561165014 + 10561165015.

It is an arithmetic number, because the mean of its divisors is an integer number (10561165015).

Almost surely, 2^21122330029 is an apocalyptic number.

It is an amenable number.

21122330029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122330029 is an equidigital number, since it uses as much as digits as its factorization.

21122330029 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 21122330029 in words is "twenty-one billion, one hundred twenty-two million, three hundred thirty thousand, twenty-nine".