220200120122221 has 4 divisors (see below), whose sum is σ = 220831066025500. Its totient is φ = 219569174218944.

The previous prime is 220200120122183. The next prime is 220200120122299. The reversal of 220200120122221 is 122221021002022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68380412870025 + 151819707252196 = 8269245^2 + 12321514^2 .

It is a cyclic number.

It is not a de Polignac number, because 220200120122221 - 2⁴⁷ = 79462631766893 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 (220200120122321) 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, 315472951116 + ... + 315472951813.

It is an arithmetic number, because the mean of its divisors is an integer number (55207766506375).

Almost surely, 2^{220200120122221} is an apocalyptic number.

It is an amenable number.

220200120122221 is a deficient number, since it is larger than the sum of its proper divisors (630945903279).

220200120122221 is an equidigital number, since it uses as much as digits as its factorization.

220200120122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630945903278.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220200120122221 its reverse (122221021002022), we get a palindrome (342421141124243).

The spelling of 220200120122221 in words is "two hundred twenty trillion, two hundred billion, one hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".