222081011 has 4 divisors (see below), whose sum is σ = 222111000. Its totient is φ = 222051024.

The previous prime is 222081001. The next prime is 222081019. The reversal of 222081011 is 110180222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 222081011 - 2¹⁰ = 222079987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222081019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5015 + ... + 21663.

It is an arithmetic number, because the mean of its divisors is an integer number (55527750).

Almost surely, 2^222081011 is an apocalyptic number.

222081011 is a deficient number, since it is larger than the sum of its proper divisors (29989).

222081011 is a wasteful number, since it uses less digits than its factorization.

222081011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29988.

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

The square root of 222081011 is about 14902.3827289464. The cubic root of 222081011 is about 605.5785381820.

The spelling of 222081011 in words is "two hundred twenty-two million, eighty-one thousand, eleven".