21796266203 has 2 divisors, whose sum is σ = 21796266204. Its totient is φ = 21796266202.

The previous prime is 21796266199. The next prime is 21796266251. The reversal of 21796266203 is 30266269712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21796266203 - 2² = 21796266199 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21796566203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10898133101 + 10898133102.

It is an arithmetic number, because the mean of its divisors is an integer number (10898133102).

Almost surely, 2^21796266203 is an apocalyptic number.

21796266203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21796266203 is an equidigital number, since it uses as much as digits as its factorization.

21796266203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 21796266203 in words is "twenty-one billion, seven hundred ninety-six million, two hundred sixty-six thousand, two hundred three".