111222321009973 has 2 divisors, whose sum is σ = 111222321009974. Its totient is φ = 111222321009972.

The previous prime is 111222321009931. The next prime is 111222321009977. The reversal of 111222321009973 is 379900123222111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109878152069284 + 1344168940689 = 10482278^2 + 1159383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111222321009973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111222321009977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611160504986 + 55611160504987.

It is an arithmetic number, because the mean of its divisors is an integer number (55611160504987).

Almost surely, 2^{111222321009973} is an apocalyptic number.

It is an amenable number.

111222321009973 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222321009973 is an equidigital number, since it uses as much as digits as its factorization.

111222321009973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 111222321009973 in words is "one hundred eleven trillion, two hundred twenty-two billion, three hundred twenty-one million, nine thousand, nine hundred seventy-three".