22212012010221 has 12 divisors (see below), whose sum is σ = 35000746198080. Its totient is φ = 13461825460680.

The previous prime is 22212012010193. The next prime is 22212012010247. The reversal of 22212012010221 is 12201021021222.

It is a happy number.

22212012010221 is a `hidden beast` number, since 2 + 221 + 20 + 1 + 201 + 0 + 221 = 666.

It is not a de Polignac number, because 22212012010221 - 2¹³ = 22212012002029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212012010194 and 22212012010203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212012010021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112181878741 + ... + 112181878938.

It is an arithmetic number, because the mean of its divisors is an integer number (2916728849840).

Almost surely, 2^{22212012010221} is an apocalyptic number.

It is an amenable number.

22212012010221 is a deficient number, since it is larger than the sum of its proper divisors (12788734187859).

22212012010221 is a wasteful number, since it uses less digits than its factorization.

22212012010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224363757696 (or 224363757693 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22212012010221 its reverse (12201021021222), we get a palindrome (34413033031443).

The spelling of 22212012010221 in words is "twenty-two trillion, two hundred twelve billion, twelve million, ten thousand, two hundred twenty-one".