21226652903 has 2 divisors, whose sum is σ = 21226652904. Its totient is φ = 21226652902.

The previous prime is 21226652791. The next prime is 21226652933. The reversal of 21226652903 is 30925662212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21226652903 - 2⁸ = 21226652647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21226652933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10613326451 + 10613326452.

It is an arithmetic number, because the mean of its divisors is an integer number (10613326452).

Almost surely, 2^21226652903 is an apocalyptic number.

21226652903 is a deficient number, since it is larger than the sum of its proper divisors (1).

21226652903 is an equidigital number, since it uses as much as digits as its factorization.

21226652903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 21226652903 in words is "twenty-one billion, two hundred twenty-six million, six hundred fifty-two thousand, nine hundred three".