222221200220101 has 4 divisors (see below), whose sum is σ = 227641229493804. Its totient is φ = 216801170946400.

The previous prime is 222221200220011. The next prime is 222221200220161. The reversal of 222221200220101 is 101022002122222.

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 3558467232100 + 218662732988001 = 1886390^2 + 14787249^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221200220101 - 2¹⁵ = 222221200187333 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 (222221200220161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2710014636790 + ... + 2710014636871.

It is an arithmetic number, because the mean of its divisors is an integer number (56910307373451).

Almost surely, 2^{222221200220101} is an apocalyptic number.

It is an amenable number.

222221200220101 is a deficient number, since it is larger than the sum of its proper divisors (5420029273703).

222221200220101 is an equidigital number, since it uses as much as digits as its factorization.

222221200220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420029273702.

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

Adding to 222221200220101 its reverse (101022002122222), we get a palindrome (323243202342323).

The spelling of 222221200220101 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred million, two hundred twenty thousand, one hundred one".