111228818947 has 2 divisors, whose sum is σ = 111228818948. Its totient is φ = 111228818946.

The previous prime is 111228818887. The next prime is 111228818957. The reversal of 111228818947 is 749818822111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111228818947 - 2¹¹ = 111228816899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111228818894 and 111228818903.

It is not a weakly prime, because it can be changed into another prime (111228818957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55614409473 + 55614409474.

It is an arithmetic number, because the mean of its divisors is an integer number (55614409474).

Almost surely, 2^111228818947 is an apocalyptic number.

111228818947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111228818947 is an equidigital number, since it uses as much as digits as its factorization.

111228818947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 52.

The spelling of 111228818947 in words is "one hundred eleven billion, two hundred twenty-eight million, eight hundred eighteen thousand, nine hundred forty-seven".