22222011122001 has 20 divisors (see below), whose sum is σ = 33822180456372. Its totient is φ = 14535151926048.

The previous prime is 22222011121987. The next prime is 22222011122009. The reversal of 22222011122001 is 10022111022222.

It is a happy number.

22222011122001 is a `hidden beast` number, since 222 + 220 + 1 + 1 + 1 + 220 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19565759822400 + 2656251299601 = 4423320^2 + 1629801^2 .

It is not a de Polignac number, because 22222011122001 - 2¹⁴ = 22222011105617 is a prime.

It is a super-2 number, since 2×22222011122001² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22222011122009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2588163786 + ... + 2588172371.

Almost surely, 2^{22222011122001} is an apocalyptic number.

It is an amenable number.

22222011122001 is a deficient number, since it is larger than the sum of its proper divisors (11600169334371).

22222011122001 is an equidigital number, since it uses as much as digits as its factorization.

22222011122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176336222 (or 5176336213 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22222011122001 its reverse (10022111022222), we get a palindrome (32244122144223).

The spelling of 22222011122001 in words is "twenty-two trillion, two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, one".