111011001220201 has 4 divisors (see below), whose sum is σ = 111718077661252. Its totient is φ = 110303924779152.

The previous prime is 111011001220199. The next prime is 111011001220277. The reversal of 111011001220201 is 102022100110111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11089965625600 + 99921035594601 = 3330160^2 + 9996051^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011001220201 - 2¹ = 111011001220199 is a prime.

It is a super-2 number, since 2×111011001220201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011001223201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353538220290 + ... + 353538220603.

It is an arithmetic number, because the mean of its divisors is an integer number (27929519415313).

Almost surely, 2^{111011001220201} is an apocalyptic number.

It is an amenable number.

111011001220201 is a deficient number, since it is larger than the sum of its proper divisors (707076441051).

111011001220201 is an equidigital number, since it uses as much as digits as its factorization.

111011001220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707076441050.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111011001220201 its reverse (102022100110111), we get a palindrome (213033101330312).

The spelling of 111011001220201 in words is "one hundred eleven trillion, eleven billion, one million, two hundred twenty thousand, two hundred one".