22010111011221 has 4 divisors (see below), whose sum is σ = 29346814681632. Its totient is φ = 14673407340812.

The previous prime is 22010111011171. The next prime is 22010111011243. The reversal of 22010111011221 is 12211011101022.

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 22010111011221 - 2¹⁰ = 22010111010197 is a prime.

It is a super-2 number, since 2×22010111011221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22010111011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010111011261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3668351835201 + ... + 3668351835206.

It is an arithmetic number, because the mean of its divisors is an integer number (7336703670408).

Almost surely, 2^{22010111011221} is an apocalyptic number.

It is an amenable number.

22010111011221 is a deficient number, since it is larger than the sum of its proper divisors (7336703670411).

22010111011221 is an equidigital number, since it uses as much as digits as its factorization.

22010111011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336703670410.

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

Adding to 22010111011221 its reverse (12211011101022), we get a palindrome (34221122112243).

The spelling of 22010111011221 in words is "twenty-two trillion, ten billion, one hundred eleven million, eleven thousand, two hundred twenty-one".