11111221210004 has 48 divisors (see below), whose sum is σ = 21359245353600. Its totient is φ = 5034070394496.

The previous prime is 11111221209941. The next prime is 11111221210049. The reversal of 11111221210004 is 40001212211111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30086582 + ... + 30453650.

It is an arithmetic number, because the mean of its divisors is an integer number (444984278200).

Almost surely, 2^{11111221210004} is an apocalyptic number.

It is an amenable number.

11111221210004 is a deficient number, since it is larger than the sum of its proper divisors (10248024143596).

11111221210004 is a wasteful number, since it uses less digits than its factorization.

11111221210004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384432 (or 384430 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11111221210004 its reverse (40001212211111), we get a palindrome (51112433421115).

The spelling of 11111221210004 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred ten thousand, four".