21030022633 has 2 divisors, whose sum is σ = 21030022634. Its totient is φ = 21030022632.

The previous prime is 21030022619. The next prime is 21030022639. The reversal of 21030022633 is 33622003012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19658283264 + 1371739369 = 140208^2 + 37037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21030022633 is a prime.

It is not a weakly prime, because it can be changed into another prime (21030022639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10515011316 + 10515011317.

It is an arithmetic number, because the mean of its divisors is an integer number (10515011317).

Almost surely, 2^21030022633 is an apocalyptic number.

It is an amenable number.

21030022633 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030022633 is an equidigital number, since it uses as much as digits as its factorization.

21030022633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21030022633 its reverse (33622003012), we get a palindrome (54652025645).

The spelling of 21030022633 in words is "twenty-one billion, thirty million, twenty-two thousand, six hundred thirty-three".