220111200212021 has 16 divisors (see below), whose sum is σ = 232260431356800. Its totient is φ = 208018782923328.

The previous prime is 220111200212017. The next prime is 220111200212039. The reversal of 220111200212021 is 120212002111022.

It is a cyclic number.

It is not a de Polignac number, because 220111200212021 - 2² = 220111200212017 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 (220111200212051) 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, 16231175 + ... + 26526843.

It is an arithmetic number, because the mean of its divisors is an integer number (14516276959800).

Almost surely, 2^{220111200212021} is an apocalyptic number.

It is an amenable number.

220111200212021 is a deficient number, since it is larger than the sum of its proper divisors (12149231144779).

220111200212021 is a wasteful number, since it uses less digits than its factorization.

220111200212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10298428.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220111200212021 its reverse (120212002111022), we get a palindrome (340323202323043).

The spelling of 220111200212021 in words is "two hundred twenty trillion, one hundred eleven billion, two hundred million, two hundred twelve thousand, twenty-one".