22001121111201 has 16 divisors (see below), whose sum is σ = 29411845687296. Its totient is φ = 14628906413696.

The previous prime is 22001121111187. The next prime is 22001121111217. The reversal of 22001121111201 is 10211112110022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22001121111201 - 2¹³ = 22001121103009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22001121111601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154070431 + ... + 154213163.

It is an arithmetic number, because the mean of its divisors is an integer number (1838240355456).

Almost surely, 2^{22001121111201} is an apocalyptic number.

It is an amenable number.

22001121111201 is a deficient number, since it is larger than the sum of its proper divisors (7410724576095).

22001121111201 is a wasteful number, since it uses less digits than its factorization.

22001121111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277272.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22001121111201 its reverse (10211112110022), we get a palindrome (32212233221223).

The spelling of 22001121111201 in words is "twenty-two trillion, one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred one".