2020002220021 has 8 divisors (see below), whose sum is σ = 2020529799864. Its totient is φ = 2019474724800.

The previous prime is 2020002220013. The next prime is 2020002220037. The reversal of 2020002220021 is 1200222000202.

It can be written as a sum of positive squares in 4 ways, for example, as 38343514225 + 1981658705796 = 195815^2 + 1407714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020002220021 - 2³ = 2020002220013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020002219983 and 2020002220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020002220001) 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 7 ways as a sum of consecutive naturals, for example, 85737775 + ... + 85761331.

It is an arithmetic number, because the mean of its divisors is an integer number (252566224983).

Almost surely, 2^{2020002220021} is an apocalyptic number.

It is an amenable number.

2020002220021 is a deficient number, since it is larger than the sum of its proper divisors (527579843).

2020002220021 is a wasteful number, since it uses less digits than its factorization.

2020002220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42311.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 2020002220021 its reverse (1200222000202), we get a palindrome (3220224220223).

The spelling of 2020002220021 in words is "two trillion, twenty billion, two million, two hundred twenty thousand, twenty-one".