220000000011221 has 8 divisors (see below), whose sum is σ = 220402494177624. Its totient is φ = 219597611904000.

The previous prime is 220000000011217. The next prime is 220000000011227. The reversal of 220000000011221 is 122110000000022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 871635100996 + 219128364910225 = 933614^2 + 14802985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220000000011221 - 2² = 220000000011217 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 (220000000011227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22361780 + ... + 30660221.

It is an arithmetic number, because the mean of its divisors is an integer number (27550311772203).

Almost surely, 2^{220000000011221} is an apocalyptic number.

It is an amenable number.

220000000011221 is a deficient number, since it is larger than the sum of its proper divisors (402494166403).

220000000011221 is an equidigital number, since it uses as much as digits as its factorization.

220000000011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53029591.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220000000011221 its reverse (122110000000022), we get a palindrome (342110000011243).

The spelling of 220000000011221 in words is "two hundred twenty trillion, eleven thousand, two hundred twenty-one".