1112222100001 has 2 divisors, whose sum is σ = 1112222100002. Its totient is φ = 1112222100000.

The previous prime is 1112222099999. The next prime is 1112222100103. The reversal of 1112222100001 is 1000012222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831771360225 + 280450739776 = 912015^2 + 529576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112222100001 - 2¹ = 1112222099999 is a prime.

Together with 1112222099999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1112222103001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556111050000 + 556111050001.

It is an arithmetic number, because the mean of its divisors is an integer number (556111050001).

Almost surely, 2^{1112222100001} is an apocalyptic number.

It is an amenable number.

1112222100001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112222100001 is an equidigital number, since it uses as much as digits as its factorization.

1112222100001 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 1112222100001 its reverse (1000012222111), we get a palindrome (2112234322112).

The spelling of 1112222100001 in words is "one trillion, one hundred twelve billion, two hundred twenty-two million, one hundred thousand, one".