222101212111001 has 4 divisors (see below), whose sum is σ = 222537560268900. Its totient is φ = 221664863953104.

The previous prime is 222101212110931. The next prime is 222101212111021. The reversal of 222101212111001 is 100111212101222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206755784790025 + 15345427320976 = 14379005^2 + 3917324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222101212111001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222101212111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218174078186 + ... + 218174079203.

It is an arithmetic number, because the mean of its divisors is an integer number (55634390067225).

Almost surely, 2^{222101212111001} is an apocalyptic number.

It is an amenable number.

222101212111001 is a deficient number, since it is larger than the sum of its proper divisors (436348157899).

222101212111001 is an equidigital number, since it uses as much as digits as its factorization.

222101212111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436348157898.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 222101212111001 its reverse (100111212101222), we get a palindrome (322212424212223).

The spelling of 222101212111001 in words is "two hundred twenty-two trillion, one hundred one billion, two hundred twelve million, one hundred eleven thousand, one".