111222321009977 has 2 divisors, whose sum is σ = 111222321009978. Its totient is φ = 111222321009976.

The previous prime is 111222321009973. The next prime is 111222321010049. The reversal of 111222321009977 is 779900123222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110406904785961 + 815416224016 = 10507469^2 + 903004^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222321009977 - 2² = 111222321009973 is a prime.

It is not a weakly prime, because it can be changed into another prime (111222321009973) 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, 55611160504988 + 55611160504989.

It is an arithmetic number, because the mean of its divisors is an integer number (55611160504989).

Almost surely, 2^{111222321009977} is an apocalyptic number.

It is an amenable number.

111222321009977 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222321009977 is an equidigital number, since it uses as much as digits as its factorization.

111222321009977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 111222321009977 in words is "one hundred eleven trillion, two hundred twenty-two billion, three hundred twenty-one million, nine thousand, nine hundred seventy-seven".