21002192633 has 2 divisors, whose sum is σ = 21002192634. Its totient is φ = 21002192632.

The previous prime is 21002192489. The next prime is 21002192647. The reversal of 21002192633 is 33629120012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17477633209 + 3524559424 = 132203^2 + 59368^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002192633 - 2¹⁸ = 21001930489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21002192596 and 21002192605.

It is not a weakly prime, because it can be changed into another prime (21002192663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501096316 + 10501096317.

It is an arithmetic number, because the mean of its divisors is an integer number (10501096317).

Almost surely, 2^21002192633 is an apocalyptic number.

It is an amenable number.

21002192633 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002192633 is an equidigital number, since it uses as much as digits as its factorization.

21002192633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 21002192633 in words is "twenty-one billion, two million, one hundred ninety-two thousand, six hundred thirty-three".