111201021201 has 4 divisors (see below), whose sum is σ = 148268028272. Its totient is φ = 74134014132.

The previous prime is 111201021193. The next prime is 111201021229. The reversal of 111201021201 is 102120102111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111201021201 - 2³ = 111201021193 is a prime.

It is a super-2 number, since 2×111201021201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201021241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533503531 + ... + 18533503536.

It is an arithmetic number, because the mean of its divisors is an integer number (37067007068).

Almost surely, 2^111201021201 is an apocalyptic number.

It is an amenable number.

111201021201 is a deficient number, since it is larger than the sum of its proper divisors (37067007071).

111201021201 is an equidigital number, since it uses as much as digits as its factorization.

111201021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37067007070.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111201021201 its reverse (102120102111), we get a palindrome (213321123312).

The spelling of 111201021201 in words is "one hundred eleven billion, two hundred one million, twenty-one thousand, two hundred one".