22112221012001 has 4 divisors (see below), whose sum is σ = 22112232206592. Its totient is φ = 22112209817412.

The previous prime is 22112221011953. The next prime is 22112221012039. The reversal of 22112221012001 is 10021012221122.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22112221012001 - 2³⁸ = 21837343105057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22112221012201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755401 + ... + 6877926.

It is an arithmetic number, because the mean of its divisors is an integer number (5528058051648).

Almost surely, 2^{22112221012001} is an apocalyptic number.

It is an amenable number.

22112221012001 is a deficient number, since it is larger than the sum of its proper divisors (11194591).

22112221012001 is an equidigital number, since it uses as much as digits as its factorization.

22112221012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11194590.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22112221012001 its reverse (10021012221122), we get a palindrome (32133233233123).

It can be divided in two parts, 2211222 and 1012001, that added together give a palindrome (3223223).

The spelling of 22112221012001 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, twelve thousand, one".