22222200112221 has 16 divisors (see below), whose sum is σ = 31138083884864. Its totient is φ = 14079181463424.

The previous prime is 22222200112207. The next prime is 22222200112223. The reversal of 22222200112221 is 12221100222222.

It is not a de Polignac number, because 22222200112221 - 2¹⁰ = 22222200111197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222200112223) 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, 2327902216 + ... + 2327911761.

It is an arithmetic number, because the mean of its divisors is an integer number (1946130242804).

Almost surely, 2^{22222200112221} is an apocalyptic number.

It is an amenable number.

22222200112221 is a deficient number, since it is larger than the sum of its proper divisors (8915883772643).

22222200112221 is a wasteful number, since it uses less digits than its factorization.

22222200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4655814060.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222200112221 its reverse (12221100222222), we get a palindrome (34443300334443).

The spelling of 22222200112221 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".