22111211102001 has 16 divisors (see below), whose sum is σ = 33702378008448. Its totient is φ = 12631563792000.

The previous prime is 22111211101909. The next prime is 22111211102011. The reversal of 22111211102001 is 10020111211122.

It is a happy number.

It is not a de Polignac number, because 22111211102001 - 2²² = 22111206907697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22111211102011) 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, 142169620 + ... + 142325061.

It is an arithmetic number, because the mean of its divisors is an integer number (2106398625528).

Almost surely, 2^{22111211102001} is an apocalyptic number.

22111211102001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22111211102001 is a deficient number, since it is larger than the sum of its proper divisors (11591166906447).

22111211102001 is a wasteful number, since it uses less digits than its factorization.

22111211102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284498392.

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

Adding to 22111211102001 its reverse (10020111211122), we get a palindrome (32131322313123).

The spelling of 22111211102001 in words is "twenty-two trillion, one hundred eleven billion, two hundred eleven million, one hundred two thousand, one".