20021002220099 has 24 divisors (see below), whose sum is σ = 21832122642000. Its totient is φ = 18346274279424.

The previous prime is 20021002220081. The next prime is 20021002220117. The reversal of 20021002220099 is 99002220012002.

It is an interprime number because it is at equal distance from previous prime (20021002220081) and next prime (20021002220117).

It is not a de Polignac number, because 20021002220099 - 2⁸ = 20021002219843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021002220399) 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 in 23 ways as a sum of consecutive naturals, for example, 1316027 + ... + 6463275.

It is an arithmetic number, because the mean of its divisors is an integer number (909671776750).

Almost surely, 2^{20021002220099} is an apocalyptic number.

20021002220099 is a deficient number, since it is larger than the sum of its proper divisors (1811120421901).

20021002220099 is a wasteful number, since it uses less digits than its factorization.

20021002220099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147639 (or 5147622 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 20021002220099 in words is "twenty trillion, twenty-one billion, two million, two hundred twenty thousand, ninety-nine".