222221012011 has 4 divisors (see below), whose sum is σ = 222409176624. Its totient is φ = 222032847400.

The previous prime is 222221011843. The next prime is 222221012021. The reversal of 222221012011 is 110210122222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222221012011 - 2¹³ = 222221003819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221012021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94080535 + ... + 94082896.

It is an arithmetic number, because the mean of its divisors is an integer number (55602294156).

Almost surely, 2^222221012011 is an apocalyptic number.

222221012011 is a deficient number, since it is larger than the sum of its proper divisors (188164613).

222221012011 is a wasteful number, since it uses less digits than its factorization.

222221012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188164612.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222221012011 its reverse (110210122222), we get a palindrome (332431134233).

The spelling of 222221012011 in words is "two hundred twenty-two billion, two hundred twenty-one million, twelve thousand, eleven".