22112102112221 has 4 divisors (see below), whose sum is σ = 24122293213344. Its totient is φ = 20101911011100.

The previous prime is 22112102112211. The next prime is 22112102112227. The reversal of 22112102112221 is 12221120121122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22112102112221 - 2⁶ = 22112102112157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112102112193 and 22112102112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112102112227) 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, 1005095550545 + ... + 1005095550566.

It is an arithmetic number, because the mean of its divisors is an integer number (6030573303336).

Almost surely, 2^{22112102112221} is an apocalyptic number.

It is an amenable number.

22112102112221 is a deficient number, since it is larger than the sum of its proper divisors (2010191101123).

22112102112221 is a wasteful number, since it uses less digits than its factorization.

22112102112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010191101122.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112102112221 its reverse (12221120121122), we get a palindrome (34333222233343).

The spelling of 22112102112221 in words is "twenty-two trillion, one hundred twelve billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".