1111220111201 has 16 divisors (see below), whose sum is σ = 1156779081360. Its totient is φ = 1066150283520.

The previous prime is 1111220111189. The next prime is 1111220111231. The reversal of 1111220111201 is 1021110221111.

It can be written as a sum of positive squares in 8 ways, for example, as 232829410576 + 878390700625 = 482524^2 + 937225^2 .

It is not a de Polignac number, because 1111220111201 - 2³⁴ = 1094040242017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111220111231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9842411 + ... + 9954671.

It is an arithmetic number, because the mean of its divisors is an integer number (72298692585).

Almost surely, 2^{1111220111201} is an apocalyptic number.

It is an amenable number.

1111220111201 is a deficient number, since it is larger than the sum of its proper divisors (45558970159).

1111220111201 is a wasteful number, since it uses less digits than its factorization.

1111220111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114436.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111220111201 its reverse (1021110221111), we get a palindrome (2132330332312).

The spelling of 1111220111201 in words is "one trillion, one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, two hundred one".