11122221204 has 18 divisors (see below), whose sum is σ = 28114503690. Its totient is φ = 3707407056.

The previous prime is 11122221181. The next prime is 11122221211. The reversal of 11122221204 is 40212222111.

11122221204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8612211204 + 2510010000 = 92802^2 + 50100^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×11122221204³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 154475259 + ... + 154475330.

Almost surely, 2^11122221204 is an apocalyptic number.

It is an amenable number.

11122221204 is an abundant number, since it is smaller than the sum of its proper divisors (16992282486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11122221204 is a wasteful number, since it uses less digits than its factorization.

11122221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308950599 (or 308950594 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11122221204 its reverse (40212222111), we get a palindrome (51334443315).

The spelling of 11122221204 in words is "eleven billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred four".