222112221101 has 8 divisors (see below), whose sum is σ = 224127465144. Its totient is φ = 220097848320.

The previous prime is 222112221077. The next prime is 222112221173. The reversal of 222112221101 is 101122211222.

It can be written as a sum of positive squares in 4 ways, for example, as 13970058025 + 208142163076 = 118195^2 + 456226^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222112221101 is a prime.

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 222112221101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222112221181) 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, 299915 + ... + 730871.

It is an arithmetic number, because the mean of its divisors is an integer number (28015933143).

Almost surely, 2^222112221101 is an apocalyptic number.

It is an amenable number.

222112221101 is a deficient number, since it is larger than the sum of its proper divisors (2015244043).

222112221101 is a wasteful number, since it uses less digits than its factorization.

222112221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435631.

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

Adding to 222112221101 its reverse (101122211222), we get a palindrome (323234432323).

The spelling of 222112221101 in words is "two hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred one".