22110010201221 has 4 divisors (see below), whose sum is σ = 29480013601632. Its totient is φ = 14740006800812.

The previous prime is 22110010201177. The next prime is 22110010201289. The reversal of 22110010201221 is 12210201001122.

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 22110010201221 - 2⁷ = 22110010201093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22110010201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110010201291) 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, 3685001700201 + ... + 3685001700206.

It is an arithmetic number, because the mean of its divisors is an integer number (7370003400408).

Almost surely, 2^{22110010201221} is an apocalyptic number.

It is an amenable number.

22110010201221 is a deficient number, since it is larger than the sum of its proper divisors (7370003400411).

22110010201221 is an equidigital number, since it uses as much as digits as its factorization.

22110010201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370003400410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22110010201221 its reverse (12210201001122), we get a palindrome (34320211202343).

The spelling of 22110010201221 in words is "twenty-two trillion, one hundred ten billion, ten million, two hundred one thousand, two hundred twenty-one".