22011210221 has 64 divisors (see below), whose sum is σ = 30891732480. Its totient is φ = 15126773760.

The previous prime is 22011210211. The next prime is 22011210227. The reversal of 22011210221 is 12201211022.

It is not a de Polignac number, because 22011210221 - 2⁶ = 22011210157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22011210196 and 22011210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011210227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2811905 + ... + 2819721.

It is an arithmetic number, because the mean of its divisors is an integer number (482683320).

Almost surely, 2^22011210221 is an apocalyptic number.

It is an amenable number.

22011210221 is a deficient number, since it is larger than the sum of its proper divisors (8880522259).

22011210221 is a wasteful number, since it uses less digits than its factorization.

22011210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7974.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22011210221 its reverse (12201211022), we get a palindrome (34212421243).

It can be divided in two parts, 22011 and 210221, that added together give a palindrome (232232).

The spelling of 22011210221 in words is "twenty-two billion, eleven million, two hundred ten thousand, two hundred twenty-one".