20968226999 has 2 divisors, whose sum is σ = 20968227000. Its totient is φ = 20968226998.

The previous prime is 20968226987. The next prime is 20968227001. The reversal of 20968226999 is 99962286902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20968226999 - 2¹² = 20968222903 is a prime.

Together with 20968227001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20968226399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10484113499 + 10484113500.

It is an arithmetic number, because the mean of its divisors is an integer number (10484113500).

Almost surely, 2^20968226999 is an apocalyptic number.

20968226999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20968226999 is an equidigital number, since it uses as much as digits as its factorization.

20968226999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 20968226999 in words is "twenty billion, nine hundred sixty-eight million, two hundred twenty-six thousand, nine hundred ninety-nine".