20002220999851 has 2 divisors, whose sum is σ = 20002220999852. Its totient is φ = 20002220999850.

The previous prime is 20002220999837. The next prime is 20002220999897. The reversal of 20002220999851 is 15899902220002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20002220999851 - 2¹⁷ = 20002220868779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002220999795 and 20002220999804.

It is not a weakly prime, because it can be changed into another prime (20002220999821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001110499925 + 10001110499926.

It is an arithmetic number, because the mean of its divisors is an integer number (10001110499926).

Almost surely, 2^{20002220999851} is an apocalyptic number.

20002220999851 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002220999851 is an equidigital number, since it uses as much as digits as its factorization.

20002220999851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 20002220999851 in words is "twenty trillion, two billion, two hundred twenty million, nine hundred ninety-nine thousand, eight hundred fifty-one".