22110120221 has 4 divisors (see below), whose sum is σ = 25268708832. Its totient is φ = 18951531612.

The previous prime is 22110120209. The next prime is 22110120223. The reversal of 22110120221 is 12202101122.

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 22110120221 - 2²² = 22105925917 is a prime.

It is a super-4 number, since 4×22110120221⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22110120196 and 22110120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110120223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579294295 + ... + 1579294308.

It is an arithmetic number, because the mean of its divisors is an integer number (6317177208).

Almost surely, 2^22110120221 is an apocalyptic number.

It is an amenable number.

22110120221 is a deficient number, since it is larger than the sum of its proper divisors (3158588611).

22110120221 is an equidigital number, since it uses as much as digits as its factorization.

22110120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158588610.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22110120221 its reverse (12202101122), we get a palindrome (34312221343).

The spelling of 22110120221 in words is "twenty-two billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-one".