111222101101121 has 2 divisors, whose sum is σ = 111222101101122. Its totient is φ = 111222101101120.

The previous prime is 111222101101117. The next prime is 111222101101127. The reversal of 111222101101121 is 121101101222111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111104564578225 + 117536522896 = 10540615^2 + 342836^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222101101121 - 2² = 111222101101117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111222101101121.

It is not a weakly prime, because it can be changed into another prime (111222101101127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55611050550560 + 55611050550561.

It is an arithmetic number, because the mean of its divisors is an integer number (55611050550561).

Almost surely, 2^{111222101101121} is an apocalyptic number.

It is an amenable number.

111222101101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111222101101121 is an equidigital number, since it uses as much as digits as its factorization.

111222101101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111222101101121 its reverse (121101101222111), we get a palindrome (232323202323232).

The spelling of 111222101101121 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred one million, one hundred one thousand, one hundred twenty-one".