21203022299 has 2 divisors, whose sum is σ = 21203022300. Its totient is φ = 21203022298.

The previous prime is 21203022283. The next prime is 21203022341. The reversal of 21203022299 is 99222030212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21203022299 - 2⁴ = 21203022283 is a prime.

It is a super-2 number, since 2×21203022299² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21203022209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601511149 + 10601511150.

It is an arithmetic number, because the mean of its divisors is an integer number (10601511150).

Almost surely, 2^21203022299 is an apocalyptic number.

21203022299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203022299 is an equidigital number, since it uses as much as digits as its factorization.

21203022299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 21203022299 in words is "twenty-one billion, two hundred three million, twenty-two thousand, two hundred ninety-nine".