22001123201 has 16 divisors (see below), whose sum is σ = 22681717968. Its totient is φ = 21327667200.

The previous prime is 22001123167. The next prime is 22001123281. The reversal of 22001123201 is 10232110022.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14635192576 + 7365930625 = 120976^2 + 85825^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001123201 - 2¹⁰ = 22001122177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22001123281) 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, 12636191 + ... + 12637931.

It is an arithmetic number, because the mean of its divisors is an integer number (1417607373).

Almost surely, 2^22001123201 is an apocalyptic number.

It is an amenable number.

22001123201 is a deficient number, since it is larger than the sum of its proper divisors (680594767).

22001123201 is a wasteful number, since it uses less digits than its factorization.

22001123201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22001123201 its reverse (10232110022), we get a palindrome (32233233223).

The spelling of 22001123201 in words is "twenty-two billion, one million, one hundred twenty-three thousand, two hundred one".