2202220020021 has 16 divisors (see below), whose sum is σ = 3356114179584. Its totient is φ = 1258280062704.

The previous prime is 2202220019999. The next prime is 2202220020079. The reversal of 2202220020021 is 1200200222022.

It is not a de Polignac number, because 2202220020021 - 2⁷ = 2202220019893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202220020421) 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 in 15 ways as a sum of consecutive naturals, for example, 5267935 + ... + 5670588.

It is an arithmetic number, because the mean of its divisors is an integer number (209757136224).

Almost surely, 2^{2202220020021} is an apocalyptic number.

2202220020021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2202220020021 is a deficient number, since it is larger than the sum of its proper divisors (1153894159563).

2202220020021 is a wasteful number, since it uses less digits than its factorization.

2202220020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10948120.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2202220020021 its reverse (1200200222022), we get a palindrome (3402420242043).

The spelling of 2202220020021 in words is "two trillion, two hundred two billion, two hundred twenty million, twenty thousand, twenty-one".