1111201001111 has 2 divisors, whose sum is σ = 1111201001112. Its totient is φ = 1111201001110.

The previous prime is 1111201001101. The next prime is 1111201001137. The reversal of 1111201001111 is 1111001021111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111201001111 - 2¹⁴ = 1111200984727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111201001092 and 1111201001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111201001101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555600500555 + 555600500556.

It is an arithmetic number, because the mean of its divisors is an integer number (555600500556).

Almost surely, 2^{1111201001111} is an apocalyptic number.

1111201001111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111201001111 is an equidigital number, since it uses as much as digits as its factorization.

1111201001111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1111201001111 its reverse (1111001021111), we get a palindrome (2222202022222).

The spelling of 1111201001111 in words is "one trillion, one hundred eleven billion, two hundred one million, one thousand, one hundred eleven".