22022220011221 has 4 divisors (see below), whose sum is σ = 22022503562592. Its totient is φ = 22021936459852.

The previous prime is 22022220011167. The next prime is 22022220011237. The reversal of 22022220011221 is 12211002222022.

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 22022220011221 - 2¹⁷ = 22022219880149 is a prime.

It is a super-2 number, since 2×22022220011221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022220011251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141659155 + ... + 141814528.

It is an arithmetic number, because the mean of its divisors is an integer number (5505625890648).

Almost surely, 2^{22022220011221} is an apocalyptic number.

It is an amenable number.

22022220011221 is a deficient number, since it is larger than the sum of its proper divisors (283551371).

22022220011221 is an equidigital number, since it uses as much as digits as its factorization.

22022220011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283551370.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22022220011221 its reverse (12211002222022), we get a palindrome (34233222233243).

The spelling of 22022220011221 in words is "twenty-two trillion, twenty-two billion, two hundred twenty million, eleven thousand, two hundred twenty-one".