111011211212201 has 8 divisors (see below), whose sum is σ = 111103972843080. Its totient is φ = 110918454461568.

The previous prime is 111011211212101. The next prime is 111011211212233. The reversal of 111011211212201 is 102212112110111.

It can be written as a sum of positive squares in 4 ways, for example, as 83277506173801 + 27733705038400 = 9125651^2 + 5266280^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111011211212201 - 2³⁰ = 111010137470377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111011211212201.

It is not an unprimeable number, because it can be changed into a prime (111011211212101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45024695 + ... + 47426211.

It is an arithmetic number, because the mean of its divisors is an integer number (13887996605385).

Almost surely, 2^{111011211212201} is an apocalyptic number.

It is an amenable number.

111011211212201 is a deficient number, since it is larger than the sum of its proper divisors (92761630879).

111011211212201 is a wasteful number, since it uses less digits than its factorization.

111011211212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440123.

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

Adding to 111011211212201 its reverse (102212112110111), we get a palindrome (213223323322312).

The spelling of 111011211212201 in words is "one hundred eleven trillion, eleven billion, two hundred eleven million, two hundred twelve thousand, two hundred one".