22031122121 has 8 divisors (see below), whose sum is σ = 22776408384. Its totient is φ = 21293722800.

The previous prime is 22031122093. The next prime is 22031122133. The reversal of 22031122121 is 12122113022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22031122121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22031122121.

It is not an unprimeable number, because it can be changed into a prime (22031122621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966055 + ... + 1977228.

It is an arithmetic number, because the mean of its divisors is an integer number (2847051048).

Almost surely, 2^22031122121 is an apocalyptic number.

It is an amenable number.

22031122121 is a deficient number, since it is larger than the sum of its proper divisors (745286263).

22031122121 is a wasteful number, since it uses less digits than its factorization.

22031122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943471.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22031122121 its reverse (12122113022), we get a palindrome (34153235143).

Subtracting from 22031122121 its reverse (12122113022), we obtain a palindrome (9909009099).

The spelling of 22031122121 in words is "twenty-two billion, thirty-one million, one hundred twenty-two thousand, one hundred twenty-one".