222122112221201 has 4 divisors (see below), whose sum is σ = 222219834226212. Its totient is φ = 222024390216192.

The previous prime is 222122112221171. The next prime is 222122112221413. The reversal of 222122112221201 is 102122211221222.

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 153260661262801 + 68861450958400 = 12379849^2 + 8298280^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122112221201 - 2²⁶ = 222122045112337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122112223201) 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, 48860999096 + ... + 48861003641.

It is an arithmetic number, because the mean of its divisors is an integer number (55554958556553).

Almost surely, 2^{222122112221201} is an apocalyptic number.

It is an amenable number.

222122112221201 is a deficient number, since it is larger than the sum of its proper divisors (97722005011).

222122112221201 is an equidigital number, since it uses as much as digits as its factorization.

222122112221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97722005010.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 222122112221201 its reverse (102122211221222), we get a palindrome (324244323442423).

The spelling of 222122112221201 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, two hundred one".