111221000210011 has 4 divisors (see below), whose sum is σ = 111967449876000. Its totient is φ = 110474550544024.

The previous prime is 111221000209999. The next prime is 111221000210017. The reversal of 111221000210011 is 110012000122111.

It is a happy number.

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 111221000210011 - 2¹⁷ = 111221000078939 is a prime.

It is a super-2 number, since 2×111221000210011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111221000209973 and 111221000210000.

It is not an unprimeable number, because it can be changed into a prime (111221000210017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373224832771 + ... + 373224833068.

It is an arithmetic number, because the mean of its divisors is an integer number (27991862469000).

Almost surely, 2^{111221000210011} is an apocalyptic number.

111221000210011 is a deficient number, since it is larger than the sum of its proper divisors (746449665989).

111221000210011 is an equidigital number, since it uses as much as digits as its factorization.

111221000210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746449665988.

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

Adding to 111221000210011 its reverse (110012000122111), we get a palindrome (221233000332122).

The spelling of 111221000210011 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred ten thousand, eleven".