111311121547 has 2 divisors, whose sum is σ = 111311121548. Its totient is φ = 111311121546.

The previous prime is 111311121533. The next prime is 111311121583. The reversal of 111311121547 is 745121113111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111311121547 - 2²³ = 111302732939 is a prime.

It is not a weakly prime, because it can be changed into another prime (111311151547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655560773 + 55655560774.

It is an arithmetic number, because the mean of its divisors is an integer number (55655560774).

Almost surely, 2^111311121547 is an apocalyptic number.

111311121547 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311121547 is an equidigital number, since it uses as much as digits as its factorization.

111311121547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 28.

Adding to 111311121547 its reverse (745121113111), we get a palindrome (856432234658).

The spelling of 111311121547 in words is "one hundred eleven billion, three hundred eleven million, one hundred twenty-one thousand, five hundred forty-seven".