20021012219699 has 2 divisors, whose sum is σ = 20021012219700. Its totient is φ = 20021012219698.

The previous prime is 20021012219683. The next prime is 20021012219701. The reversal of 20021012219699 is 99691221012002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20021012219699 - 2⁴ = 20021012219683 is a prime.

Together with 20021012219701, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20021012219639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010506109849 + 10010506109850.

It is an arithmetic number, because the mean of its divisors is an integer number (10010506109850).

Almost surely, 2^{20021012219699} is an apocalyptic number.

20021012219699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021012219699 is an equidigital number, since it uses as much as digits as its factorization.

20021012219699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 20021012219699 in words is "twenty trillion, twenty-one billion, twelve million, two hundred nineteen thousand, six hundred ninety-nine".