222111221201237 has 2 divisors, whose sum is σ = 222111221201238. Its totient is φ = 222111221201236.

The previous prime is 222111221201209. The next prime is 222111221201321. The reversal of 222111221201237 is 732102122111222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190608977066641 + 31502244134596 = 13806121^2 + 5612686^2 .

It is a cyclic number.

It is not a de Polignac number, because 222111221201237 - 2⁶ = 222111221201173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222111221201437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111055610600618 + 111055610600619.

It is an arithmetic number, because the mean of its divisors is an integer number (111055610600619).

Almost surely, 2^{222111221201237} is an apocalyptic number.

It is an amenable number.

222111221201237 is a deficient number, since it is larger than the sum of its proper divisors (1).

222111221201237 is an equidigital number, since it uses as much as digits as its factorization.

222111221201237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 222111221201237 its reverse (732102122111222), we get a palindrome (954213343312459).

The spelling of 222111221201237 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred one thousand, two hundred thirty-seven".