222100843681 has 8 divisors (see below), whose sum is σ = 222432859880. Its totient is φ = 221769055872.

The previous prime is 222100843639. The next prime is 222100843711. The reversal of 222100843681 is 186348001222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114165597456 + 107935246225 = 337884^2 + 328535^2 .

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 222100843681 - 2¹⁷ = 222100712609 is a prime.

It is a super-2 number, since 2×222100843681² (a number of 23 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 222100843681.

It is not an unprimeable number, because it can be changed into a prime (222100813681) 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, 1941175 + ... + 2052403.

It is an arithmetic number, because the mean of its divisors is an integer number (27804107485).

Almost surely, 2^222100843681 is an apocalyptic number.

It is an amenable number.

222100843681 is a deficient number, since it is larger than the sum of its proper divisors (332016199).

222100843681 is a wasteful number, since it uses less digits than its factorization.

222100843681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114195.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 222100843681 in words is "two hundred twenty-two billion, one hundred million, eight hundred forty-three thousand, six hundred eighty-one".