22212200221 has 16 divisors (see below), whose sum is σ = 24240359808. Its totient is φ = 20270476800.

The previous prime is 22212200191. The next prime is 22212200237. The reversal of 22212200221 is 12200221222.

It is a cyclic number.

It is not a de Polignac number, because 22212200221 - 2⁷ = 22212200093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212200195 and 22212200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212206221) 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, 15856 + ... + 211366.

It is an arithmetic number, because the mean of its divisors is an integer number (1515022488).

Almost surely, 2^22212200221 is an apocalyptic number.

It is an amenable number.

22212200221 is a deficient number, since it is larger than the sum of its proper divisors (2028159587).

22212200221 is a wasteful number, since it uses less digits than its factorization.

22212200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195732.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22212200221 its reverse (12200221222), we get a palindrome (34412421443).

The spelling of 22212200221 in words is "twenty-two billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".