220202202222021 has 4 divisors (see below), whose sum is σ = 293602936296032. Its totient is φ = 146801468148012.

The previous prime is 220202202222017. The next prime is 220202202222029. The reversal of 220202202222021 is 120222202202022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 220202202222021 - 2² = 220202202222017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202202222029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36700367037001 + ... + 36700367037006.

It is an arithmetic number, because the mean of its divisors is an integer number (73400734074008).

Almost surely, 2^{220202202222021} is an apocalyptic number.

It is an amenable number.

220202202222021 is a deficient number, since it is larger than the sum of its proper divisors (73400734074011).

220202202222021 is an equidigital number, since it uses as much as digits as its factorization.

220202202222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73400734074010.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 220202202222021 its reverse (120222202202022), we get a palindrome (340424404424043).

The spelling of 220202202222021 in words is "two hundred twenty trillion, two hundred two billion, two hundred two million, two hundred twenty-two thousand, twenty-one".