22001200123 has 16 divisors (see below), whose sum is σ = 26395269120. Its totient is φ = 17940513600.

The previous prime is 22001200121. The next prime is 22001200139. The reversal of 22001200123 is 32100210022.

It is a cyclic number.

It is not a de Polignac number, because 22001200123 - 2¹ = 22001200121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001200121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846418 + ... + 872023.

It is an arithmetic number, because the mean of its divisors is an integer number (1649704320).

Almost surely, 2^22001200123 is an apocalyptic number.

22001200123 is a deficient number, since it is larger than the sum of its proper divisors (4394068997).

22001200123 is a wasteful number, since it uses less digits than its factorization.

22001200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718538.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22001200123 its reverse (32100210022), we get a palindrome (54101410145).

The spelling of 22001200123 in words is "twenty-two billion, one million, two hundred thousand, one hundred twenty-three".