222111002221201 has 8 divisors (see below), whose sum is σ = 222178087459944. Its totient is φ = 222043920622080.

The previous prime is 222111002221151. The next prime is 222111002221223. The reversal of 222111002221201 is 102122200111222.

It can be written as a sum of positive squares in 4 ways, for example, as 172152243662400 + 49958758558801 = 13120680^2 + 7068151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222111002221201 - 2¹⁷ = 222111002090129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222111002221261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123733441 + ... + 125515681.

It is an arithmetic number, because the mean of its divisors is an integer number (27772260932493).

Almost surely, 2^{222111002221201} is an apocalyptic number.

It is an amenable number.

222111002221201 is a deficient number, since it is larger than the sum of its proper divisors (67085238743).

222111002221201 is a wasteful number, since it uses less digits than its factorization.

222111002221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819811.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222111002221201 its reverse (102122200111222), we get a palindrome (324233202332423).

The spelling of 222111002221201 in words is "two hundred twenty-two trillion, one hundred eleven billion, two million, two hundred twenty-one thousand, two hundred one".