220012101111221 has 16 divisors (see below), whose sum is σ = 228219075624960. Its totient is φ = 211846882047360.

The previous prime is 220012101111217. The next prime is 220012101111223. The reversal of 220012101111221 is 122111101210022.

It is a cyclic number.

It is not a de Polignac number, because 220012101111221 - 2² = 220012101111217 is a prime.

It is a super-2 number, since 2×220012101111221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220012101111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220012101111223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27351116 + ... + 34468938.

It is an arithmetic number, because the mean of its divisors is an integer number (14263692226560).

Almost surely, 2^{220012101111221} is an apocalyptic number.

It is an amenable number.

220012101111221 is a deficient number, since it is larger than the sum of its proper divisors (8206974513739).

220012101111221 is a wasteful number, since it uses less digits than its factorization.

220012101111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7120756.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220012101111221 its reverse (122111101210022), we get a palindrome (342123202321243).

The spelling of 220012101111221 in words is "two hundred twenty trillion, twelve billion, one hundred one million, one hundred eleven thousand, two hundred twenty-one".