111272217601 has 2 divisors, whose sum is σ = 111272217602. Its totient is φ = 111272217600.

The previous prime is 111272217521. The next prime is 111272217629. The reversal of 111272217601 is 106712272111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111122889201 + 149328400 = 333351^2 + 12220^2 .

It is a cyclic number.

It is not a de Polignac number, because 111272217601 - 2¹¹ = 111272215553 is a prime.

It is not a weakly prime, because it can be changed into another prime (111272217631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55636108800 + 55636108801.

It is an arithmetic number, because the mean of its divisors is an integer number (55636108801).

Almost surely, 2^111272217601 is an apocalyptic number.

It is an amenable number.

111272217601 is a deficient number, since it is larger than the sum of its proper divisors (1).

111272217601 is an equidigital number, since it uses as much as digits as its factorization.

111272217601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 31.

Adding to 111272217601 its reverse (106712272111), we get a palindrome (217984489712).

The spelling of 111272217601 in words is "one hundred eleven billion, two hundred seventy-two million, two hundred seventeen thousand, six hundred one".