111321335537 has 2 divisors, whose sum is σ = 111321335538. Its totient is φ = 111321335536.

The previous prime is 111321335459. The next prime is 111321335551. The reversal of 111321335537 is 735533123111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59903052001 + 51418283536 = 244751^2 + 226756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111321335537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111321335497 and 111321335506.

It is not a weakly prime, because it can be changed into another prime (111321535537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660667768 + 55660667769.

It is an arithmetic number, because the mean of its divisors is an integer number (55660667769).

Almost surely, 2^111321335537 is an apocalyptic number.

It is an amenable number.

111321335537 is a deficient number, since it is larger than the sum of its proper divisors (1).

111321335537 is an equidigital number, since it uses as much as digits as its factorization.

111321335537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 35.

Adding to 111321335537 its reverse (735533123111), we get a palindrome (846854458648).

The spelling of 111321335537 in words is "one hundred eleven billion, three hundred twenty-one million, three hundred thirty-five thousand, five hundred thirty-seven".