22011111010221 has 4 divisors (see below), whose sum is σ = 29348148013632. Its totient is φ = 14674074006812.

The previous prime is 22011111010171. The next prime is 22011111010241. The reversal of 22011111010221 is 12201011111022.

It is a happy number.

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 22011111010221 - 2⁶ = 22011111010157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22011111010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011111010241) 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, 3668518501701 + ... + 3668518501706.

It is an arithmetic number, because the mean of its divisors is an integer number (7337037003408).

Almost surely, 2^{22011111010221} is an apocalyptic number.

It is an amenable number.

22011111010221 is a deficient number, since it is larger than the sum of its proper divisors (7337037003411).

22011111010221 is an equidigital number, since it uses as much as digits as its factorization.

22011111010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337037003410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22011111010221 its reverse (12201011111022), we get a palindrome (34212122121243).

The spelling of 22011111010221 in words is "twenty-two trillion, eleven billion, one hundred eleven million, ten thousand, two hundred twenty-one".