111121119947 has 2 divisors, whose sum is σ = 111121119948. Its totient is φ = 111121119946.

The previous prime is 111121119937. The next prime is 111121120001. The reversal of 111121119947 is 749911121111.

It is a weak prime.

It is an emirp because it is prime and its reverse (749911121111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111121119947 - 2⁴ = 111121119931 is a prime.

It is a super-2 number, since 2×111121119947² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111121119947.

It is not a weakly prime, because it can be changed into another prime (111121119937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55560559973 + 55560559974.

It is an arithmetic number, because the mean of its divisors is an integer number (55560559974).

Almost surely, 2^111121119947 is an apocalyptic number.

111121119947 is a deficient number, since it is larger than the sum of its proper divisors (1).

111121119947 is an equidigital number, since it uses as much as digits as its factorization.

111121119947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 38.

The spelling of 111121119947 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred forty-seven".