22121100110001 has 4 divisors (see below), whose sum is σ = 29494800146672. Its totient is φ = 14747400073332.

The previous prime is 22121100109973. The next prime is 22121100110059. The reversal of 22121100110001 is 10001100112122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22121100110001 - 2³⁰ = 22120026368177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121100111001) 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 3 ways as a sum of consecutive naturals, for example, 3686850018331 + ... + 3686850018336.

It is an arithmetic number, because the mean of its divisors is an integer number (7373700036668).

Almost surely, 2^{22121100110001} is an apocalyptic number.

It is an amenable number.

22121100110001 is a deficient number, since it is larger than the sum of its proper divisors (7373700036671).

22121100110001 is an equidigital number, since it uses as much as digits as its factorization.

22121100110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373700036670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 22121100110001 its reverse (10001100112122), we get a palindrome (32122200222123).

The spelling of 22121100110001 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, one hundred ten thousand, one".