222112122111001 has 4 divisors (see below), whose sum is σ = 229277029275904. Its totient is φ = 214947214946100.

The previous prime is 222112122110999. The next prime is 222112122111031. The reversal of 222112122111001 is 100111221211222.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 222112122111001 - 2¹ = 222112122110999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222112122111001.

It is not an unprimeable number, because it can be changed into a prime (222112122111031) 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, 3582453582405 + ... + 3582453582466.

It is an arithmetic number, because the mean of its divisors is an integer number (57319257318976).

Almost surely, 2^{222112122111001} is an apocalyptic number.

It is an amenable number.

222112122111001 is a deficient number, since it is larger than the sum of its proper divisors (7164907164903).

222112122111001 is an equidigital number, since it uses as much as digits as its factorization.

222112122111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164907164902.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222112122111001 its reverse (100111221211222), we get a palindrome (322223343322223).

The spelling of 222112122111001 in words is "two hundred twenty-two trillion, one hundred twelve billion, one hundred twenty-two million, one hundred eleven thousand, one".