111405220513 has 2 divisors, whose sum is σ = 111405220514. Its totient is φ = 111405220512.

The previous prime is 111405220481. The next prime is 111405220517. The reversal of 111405220513 is 315022504111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74568863329 + 36836357184 = 273073^2 + 191928^2 .

It is a cyclic number.

It is not a de Polignac number, because 111405220513 - 2⁵ = 111405220481 is a prime.

It is a super-2 number, since 2×111405220513² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111405220517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55702610256 + 55702610257.

It is an arithmetic number, because the mean of its divisors is an integer number (55702610257).

Almost surely, 2^111405220513 is an apocalyptic number.

It is an amenable number.

111405220513 is a deficient number, since it is larger than the sum of its proper divisors (1).

111405220513 is an equidigital number, since it uses as much as digits as its factorization.

111405220513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 111405220513 its reverse (315022504111), we get a palindrome (426427724624).

The spelling of 111405220513 in words is "one hundred eleven billion, four hundred five million, two hundred twenty thousand, five hundred thirteen".