22111021221201 has 96 divisors (see below), whose sum is σ = 36177959301120. Its totient is φ = 12891791260800.

The previous prime is 22111021221199. The next prime is 22111021221239. The reversal of 22111021221201 is 10212212011122.

22111021221201 is a `hidden beast` number, since 2 + 211 + 10 + 21 + 221 + 201 = 666.

It is not a de Polignac number, because 22111021221201 - 2¹ = 22111021221199 is a prime.

It is a super-2 number, since 2×22111021221201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22111021221281) 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 95 ways as a sum of consecutive naturals, for example, 3052739886 + ... + 3052747128.

It is an arithmetic number, because the mean of its divisors is an integer number (376853742720).

Almost surely, 2^{22111021221201} is an apocalyptic number.

It is an amenable number.

22111021221201 is a deficient number, since it is larger than the sum of its proper divisors (14066938079919).

22111021221201 is a wasteful number, since it uses less digits than its factorization.

22111021221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027 (or 13024 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22111021221201 its reverse (10212212011122), we get a palindrome (32323233232323).

The spelling of 22111021221201 in words is "twenty-two trillion, one hundred eleven billion, twenty-one million, two hundred twenty-one thousand, two hundred one".