1100002112221 has 2 divisors, whose sum is σ = 1100002112222. Its totient is φ = 1100002112220.

The previous prime is 1100002112201. The next prime is 1100002112299. The reversal of 1100002112221 is 1222112000011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 927486489721 + 172515622500 = 963061^2 + 415350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100002112221 - 2⁷ = 1100002112093 is a prime.

It is a super-2 number, since 2×1100002112221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100002112201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550001056110 + 550001056111.

It is an arithmetic number, because the mean of its divisors is an integer number (550001056111).

Almost surely, 2^{1100002112221} is an apocalyptic number.

It is an amenable number.

1100002112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100002112221 is an equidigital number, since it uses as much as digits as its factorization.

1100002112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1100002112221 its reverse (1222112000011), we get a palindrome (2322114112232).

The spelling of 1100002112221 in words is "one trillion, one hundred billion, two million, one hundred twelve thousand, two hundred twenty-one".