22210212210221 has 16 divisors (see below), whose sum is σ = 25428725562240. Its totient is φ = 19003108412160.

The previous prime is 22210212210157. The next prime is 22210212210337. The reversal of 22210212210221 is 12201221201222.

It is a cyclic number.

It is not a de Polignac number, because 22210212210221 - 2⁶ = 22210212210157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22210212210193 and 22210212210202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210212210421) 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, 95528105 + ... + 95760321.

It is an arithmetic number, because the mean of its divisors is an integer number (1589295347640).

Almost surely, 2^{22210212210221} is an apocalyptic number.

It is an amenable number.

22210212210221 is a deficient number, since it is larger than the sum of its proper divisors (3218513352019).

22210212210221 is a wasteful number, since it uses less digits than its factorization.

22210212210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256724.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22210212210221 its reverse (12201221201222), we get a palindrome (34411433411443).

The spelling of 22210212210221 in words is "twenty-two trillion, two hundred ten billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-one".