111223542973 has 2 divisors, whose sum is σ = 111223542974. Its totient is φ = 111223542972.

The previous prime is 111223542959. The next prime is 111223543043. The reversal of 111223542973 is 379245322111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110737869529 + 485673444 = 332773^2 + 22038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111223542973 is a prime.

It is a super-2 number, since 2×111223542973² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111223542953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611771486 + 55611771487.

It is an arithmetic number, because the mean of its divisors is an integer number (55611771487).

Almost surely, 2^111223542973 is an apocalyptic number.

It is an amenable number.

111223542973 is a deficient number, since it is larger than the sum of its proper divisors (1).

111223542973 is an equidigital number, since it uses as much as digits as its factorization.

111223542973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The spelling of 111223542973 in words is "one hundred eleven billion, two hundred twenty-three million, five hundred forty-two thousand, nine hundred seventy-three".