20202222002221 has 32 divisors (see below), whose sum is σ = 23473034323200. Its totient is φ = 17029674814464.

The previous prime is 20202222002191. The next prime is 20202222002251. The reversal of 20202222002221 is 12220022220202.

It is an interprime number because it is at equal distance from previous prime (20202222002191) and next prime (20202222002251).

It is a cyclic number.

It is not a de Polignac number, because 20202222002221 - 2²³ = 20202213613613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202222002251) 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 31 ways as a sum of consecutive naturals, for example, 120158011 + ... + 120326023.

It is an arithmetic number, because the mean of its divisors is an integer number (733532322600).

Almost surely, 2^{20202222002221} is an apocalyptic number.

It is an amenable number.

20202222002221 is a deficient number, since it is larger than the sum of its proper divisors (3270812320979).

20202222002221 is a wasteful number, since it uses less digits than its factorization.

20202222002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169045.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20202222002221 its reverse (12220022220202), we get a palindrome (32422244222423).

The spelling of 20202222002221 in words is "twenty trillion, two hundred two billion, two hundred twenty-two million, two thousand, two hundred twenty-one".