22121201123 has 32 divisors (see below), whose sum is σ = 26519592960. Its totient is φ = 18053280000.

The previous prime is 22121201107. The next prime is 22121201191. The reversal of 22121201123 is 32110212122.

It is not a de Polignac number, because 22121201123 - 2⁴ = 22121201107 is a prime.

It is a super-2 number, since 2×22121201123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22121201723) 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 31 ways as a sum of consecutive naturals, for example, 9258413 + ... + 9260801.

It is an arithmetic number, because the mean of its divisors is an integer number (828737280).

Almost surely, 2^22121201123 is an apocalyptic number.

22121201123 is a deficient number, since it is larger than the sum of its proper divisors (4398391837).

22121201123 is a wasteful number, since it uses less digits than its factorization.

22121201123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

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

Adding to 22121201123 its reverse (32110212122), we get a palindrome (54231413245).

The spelling of 22121201123 in words is "twenty-two billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-three".