220002201221001 has 4 divisors (see below), whose sum is σ = 293336268294672. Its totient is φ = 146668134147332.

The previous prime is 220002201220943. The next prime is 220002201221051. The reversal of 220002201221001 is 100122102200022.

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 220002201221001 - 2¹⁸ = 220002200958857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220002201221051) 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, 36667033536831 + ... + 36667033536836.

It is an arithmetic number, because the mean of its divisors is an integer number (73334067073668).

Almost surely, 2^{220002201221001} is an apocalyptic number.

It is an amenable number.

220002201221001 is a deficient number, since it is larger than the sum of its proper divisors (73334067073671).

220002201221001 is an equidigital number, since it uses as much as digits as its factorization.

220002201221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73334067073670.

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

Adding to 220002201221001 its reverse (100122102200022), we get a palindrome (320124303421023).

The spelling of 220002201221001 in words is "two hundred twenty trillion, two billion, two hundred one million, two hundred twenty-one thousand, one".