20002220001021 has 16 divisors (see below), whose sum is σ = 26707675593600. Its totient is φ = 13315801119168.

The previous prime is 20002220000977. The next prime is 20002220001031. The reversal of 20002220001021 is 12010002220002.

It is not a de Polignac number, because 20002220001021 - 2¹⁰ = 20002219999997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002220000988 and 20002220001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002220001031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5009635 + ... + 8068511.

It is an arithmetic number, because the mean of its divisors is an integer number (1669229724600).

Almost surely, 2^{20002220001021} is an apocalyptic number.

It is an amenable number.

20002220001021 is a deficient number, since it is larger than the sum of its proper divisors (6705455592579).

20002220001021 is a wasteful number, since it uses less digits than its factorization.

20002220001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061988.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20002220001021 its reverse (12010002220002), we get a palindrome (32012222221023).

The spelling of 20002220001021 in words is "twenty trillion, two billion, two hundred twenty million, one thousand, twenty-one".