22110111021121 has 4 divisors (see below), whose sum is σ = 22206661724500. Its totient is φ = 22013560317744.

The previous prime is 22110111021043. The next prime is 22110111021199. The reversal of 22110111021121 is 12112011101122.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22110111021043) and next prime (22110111021199).

It can be written as a sum of positive squares in 2 ways, for example, as 21549686602896 + 560424418225 = 4642164^2 + 748615^2 .

It is a cyclic number.

It is not a de Polignac number, because 22110111021121 - 2¹⁵ = 22110110988353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22110111021095 and 22110111021104.

It is not an unprimeable number, because it can be changed into a prime (22110111021821) 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, 48275351346 + ... + 48275351803.

It is an arithmetic number, because the mean of its divisors is an integer number (5551665431125).

Almost surely, 2^{22110111021121} is an apocalyptic number.

It is an amenable number.

22110111021121 is a deficient number, since it is larger than the sum of its proper divisors (96550703379).

22110111021121 is an equidigital number, since it uses as much as digits as its factorization.

22110111021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96550703378.

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

Adding to 22110111021121 its reverse (12112011101122), we get a palindrome (34222122122243).

The spelling of 22110111021121 in words is "twenty-two trillion, one hundred ten billion, one hundred eleven million, twenty-one thousand, one hundred twenty-one".