111219891149 has 2 divisors, whose sum is σ = 111219891150. Its totient is φ = 111219891148.

The previous prime is 111219891131. The next prime is 111219891157. The reversal of 111219891149 is 941198912111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109408792900 + 1811098249 = 330770^2 + 42557^2 .

It is a cyclic number.

It is not a de Polignac number, because 111219891149 - 2⁸ = 111219890893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111219891199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55609945574 + 55609945575.

It is an arithmetic number, because the mean of its divisors is an integer number (55609945575).

Almost surely, 2^111219891149 is an apocalyptic number.

It is an amenable number.

111219891149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111219891149 is an equidigital number, since it uses as much as digits as its factorization.

111219891149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 47.

The spelling of 111219891149 in words is "one hundred eleven billion, two hundred nineteen million, eight hundred ninety-one thousand, one hundred forty-nine".