220012001002221 has 4 divisors (see below), whose sum is σ = 293349334669632. Its totient is φ = 146674667334812.

The previous prime is 220012001002217. The next prime is 220012001002247. The reversal of 220012001002221 is 122200100210022.

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 a cyclic number.

It is not a de Polignac number, because 220012001002221 - 2² = 220012001002217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220012001002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012001000221) 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, 36668666833701 + ... + 36668666833706.

It is an arithmetic number, because the mean of its divisors is an integer number (73337333667408).

Almost surely, 2^{220012001002221} is an apocalyptic number.

It is an amenable number.

220012001002221 is a deficient number, since it is larger than the sum of its proper divisors (73337333667411).

220012001002221 is an equidigital number, since it uses as much as digits as its factorization.

220012001002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73337333667410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220012001002221 its reverse (122200100210022), we get a palindrome (342212101212243).

The spelling of 220012001002221 in words is "two hundred twenty trillion, twelve billion, one million, two thousand, two hundred twenty-one".