222201111201001 has 4 divisors (see below), whose sum is σ = 222600035997252. Its totient is φ = 221802186404752.

The previous prime is 222201111200983. The next prime is 222201111201131. The reversal of 222201111201001 is 100102111102222.

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 116001408456025 + 106199702744976 = 10770395^2 + 10305324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222201111201001 is a prime.

It is a super-2 number, since 2×222201111201001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222201111201401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199462397290 + ... + 199462398403.

It is an arithmetic number, because the mean of its divisors is an integer number (55650008999313).

Almost surely, 2^{222201111201001} is an apocalyptic number.

It is an amenable number.

222201111201001 is a deficient number, since it is larger than the sum of its proper divisors (398924796251).

222201111201001 is an equidigital number, since it uses as much as digits as its factorization.

222201111201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398924796250.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222201111201001 its reverse (100102111102222), we get a palindrome (322303222303223).

The spelling of 222201111201001 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred eleven million, two hundred one thousand, one".