222011011221 has 16 divisors (see below), whose sum is σ = 301161788928. Its totient is φ = 145447369200.

The previous prime is 222011011177. The next prime is 222011011247. The reversal of 222011011221 is 122110110222.

It is not a de Polignac number, because 222011011221 - 2⁹ = 222011010709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222011011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222011011421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1632175 + ... + 1762956.

It is an arithmetic number, because the mean of its divisors is an integer number (18822611808).

Almost surely, 2^222011011221 is an apocalyptic number.

It is an amenable number.

222011011221 is a deficient number, since it is larger than the sum of its proper divisors (79150777707).

222011011221 is a wasteful number, since it uses less digits than its factorization.

222011011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395512.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222011011221 its reverse (122110110222), we get a palindrome (344121121443).

Subtracting from 222011011221 its reverse (122110110222), we obtain a palindrome (99900900999).

The spelling of 222011011221 in words is "two hundred twenty-two billion, eleven million, eleven thousand, two hundred twenty-one".