111221003135 has 16 divisors (see below), whose sum is σ = 145607503392. Its totient is φ = 80882947200.

The previous prime is 111221003111. The next prime is 111221003143. The reversal of 111221003135 is 531300122111.

It is not a de Polignac number, because 111221003135 - 2²² = 111216808831 is a prime.

It is a super-2 number, since 2×111221003135² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 980045 + ... + 1087625.

It is an arithmetic number, because the mean of its divisors is an integer number (9100468962).

Almost surely, 2^111221003135 is an apocalyptic number.

111221003135 is a deficient number, since it is larger than the sum of its proper divisors (34386500257).

111221003135 is a wasteful number, since it uses less digits than its factorization.

111221003135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126394.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 111221003135 its reverse (531300122111), we get a palindrome (642521125246).

The spelling of 111221003135 in words is "one hundred eleven billion, two hundred twenty-one million, three thousand, one hundred thirty-five".