11204111021 has 16 divisors (see below), whose sum is σ = 11359828800. Its totient is φ = 11049886848.

The previous prime is 11204110999. The next prime is 11204111063. The reversal of 11204111021 is 12011140211.

It is a cyclic number.

It is not a de Polignac number, because 11204111021 - 2¹⁴ = 11204094637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11204110987 and 11204111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204111221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18158705 + ... + 18159321.

It is an arithmetic number, because the mean of its divisors is an integer number (709989300).

Almost surely, 2^11204111021 is an apocalyptic number.

It is an amenable number.

11204111021 is a deficient number, since it is larger than the sum of its proper divisors (155717779).

11204111021 is a wasteful number, since it uses less digits than its factorization.

11204111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11204111021 its reverse (12011140211), we get a palindrome (23215251232).

The spelling of 11204111021 in words is "eleven billion, two hundred four million, one hundred eleven thousand, twenty-one".