111201012221011 has 4 divisors (see below), whose sum is σ = 111238848567000. Its totient is φ = 111163175875024.

The previous prime is 111201012220943. The next prime is 111201012221053. The reversal of 111201012221011 is 110122210102111.

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

It is a cyclic number.

It is not a de Polignac number, because 111201012221011 - 2⁹ = 111201012220499 is a prime.

It is a super-4 number, since 4×111201012221011⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201012221081) 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, 18918168586 + ... + 18918174463.

It is an arithmetic number, because the mean of its divisors is an integer number (27809712141750).

Almost surely, 2^{111201012221011} is an apocalyptic number.

111201012221011 is a deficient number, since it is larger than the sum of its proper divisors (37836345989).

111201012221011 is an equidigital number, since it uses as much as digits as its factorization.

111201012221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37836345988.

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

Adding to 111201012221011 its reverse (110122210102111), we get a palindrome (221323222323122).

The spelling of 111201012221011 in words is "one hundred eleven trillion, two hundred one billion, twelve million, two hundred twenty-one thousand, eleven".