220000100012221 has 24 divisors (see below), whose sum is σ = 228165147557984. Its totient is φ = 212118220117440.

The previous prime is 220000100012113. The next prime is 220000100012263. The reversal of 220000100012221 is 122210001000022.

It is a happy number.

It is not a de Polignac number, because 220000100012221 - 2⁹ = 220000100011709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000100012321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5001457990 + ... + 5001501976.

Almost surely, 2^{220000100012221} is an apocalyptic number.

It is an amenable number.

220000100012221 is a deficient number, since it is larger than the sum of its proper divisors (8165047545763).

220000100012221 is an equidigital number, since it uses as much as digits as its factorization.

220000100012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52189 (or 52160 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220000100012221 its reverse (122210001000022), we get a palindrome (342210101012243).

The spelling of 220000100012221 in words is "two hundred twenty trillion, one hundred million, twelve thousand, two hundred twenty-one".