20021011000219 has 2 divisors, whose sum is σ = 20021011000220. Its totient is φ = 20021011000218.

The previous prime is 20021011000187. The next prime is 20021011000261. The reversal of 20021011000219 is 91200011012002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20021011000219 - 2⁵ = 20021011000187 is a prime.

It is a super-2 number, since 2×20021011000219² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021011000196 and 20021011000205.

It is not a weakly prime, because it can be changed into another prime (20021011000819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010505500109 + 10010505500110.

It is an arithmetic number, because the mean of its divisors is an integer number (10010505500110).

Almost surely, 2^{20021011000219} is an apocalyptic number.

20021011000219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021011000219 is an equidigital number, since it uses as much as digits as its factorization.

20021011000219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 20021011000219 in words is "twenty trillion, twenty-one billion, eleven million, two hundred nineteen", and thus it is an aban number.