22110123221021 has 4 divisors (see below), whose sum is σ = 24120134422944. Its totient is φ = 20100112019100.

The previous prime is 22110123220909. The next prime is 22110123221101. The reversal of 22110123221021 is 12012232101122.

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 a de Polignac number, because none of the positive numbers 2^k-22110123221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110123220984 and 22110123221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110123241021) 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, 1005005600945 + ... + 1005005600966.

It is an arithmetic number, because the mean of its divisors is an integer number (6030033605736).

Almost surely, 2^{22110123221021} is an apocalyptic number.

It is an amenable number.

22110123221021 is a deficient number, since it is larger than the sum of its proper divisors (2010011201923).

22110123221021 is a wasteful number, since it uses less digits than its factorization.

22110123221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010011201922.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 22110123221021 its reverse (12012232101122), we get a palindrome (34122355322143).

The spelling of 22110123221021 in words is "twenty-two trillion, one hundred ten billion, one hundred twenty-three million, two hundred twenty-one thousand, twenty-one".