11421086228 has 12 divisors (see below), whose sum is σ = 20260694580. Its totient is φ = 5632316352.

The previous prime is 11421086213. The next prime is 11421086249. The reversal of 11421086228 is 82268012411.

It can be written as a sum of positive squares in 2 ways, for example, as 4136805124 + 7284281104 = 64318^2 + 85348^2 .

It is a super-2 number, since 2×11421086228² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19556363 + ... + 19556946.

It is an arithmetic number, because the mean of its divisors is an integer number (1688391215).

Almost surely, 2^11421086228 is an apocalyptic number.

It is an amenable number.

11421086228 is a deficient number, since it is larger than the sum of its proper divisors (8839608352).

11421086228 is a wasteful number, since it uses less digits than its factorization.

11421086228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39113386 (or 39113384 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

Adding to 11421086228 its reverse (82268012411), we get a palindrome (93689098639).

The spelling of 11421086228 in words is "eleven billion, four hundred twenty-one million, eighty-six thousand, two hundred twenty-eight".