1111022222201 has 2 divisors, whose sum is σ = 1111022222202. Its totient is φ = 1111022222200.

The previous prime is 1111022222197. The next prime is 1111022222227. The reversal of 1111022222201 is 1022222201111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618708096400 + 492314125801 = 786580^2 + 701651^2 .

It is an emirp because it is prime and its reverse (1022222201111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111022222201 - 2² = 1111022222197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111022222201.

It is not a weakly prime, because it can be changed into another prime (1111022227201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555511111100 + 555511111101.

It is an arithmetic number, because the mean of its divisors is an integer number (555511111101).

Almost surely, 2^{1111022222201} is an apocalyptic number.

It is an amenable number.

1111022222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111022222201 is an equidigital number, since it uses as much as digits as its factorization.

1111022222201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1111022222201 its reverse (1022222201111), we get a palindrome (2133244423312).

It can be divided in two parts, 111 and 1022222201, that multiplied together give a palindrome (113466664311).

The spelling of 1111022222201 in words is "one trillion, one hundred eleven billion, twenty-two million, two hundred twenty-two thousand, two hundred one".