11221124212 has 6 divisors (see below), whose sum is σ = 19636967378. Its totient is φ = 5610562104.

The previous prime is 11221124207. The next prime is 11221124249. The reversal of 11221124212 is 21242112211.

It can be written as a sum of positive squares in only one way, i.e., 7534934416 + 3686189796 = 86804^2 + 60714^2 .

It is a super-2 number, since 2×11221124212² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11221124212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402640523 + ... + 1402640530.

Almost surely, 2^11221124212 is an apocalyptic number.

It is an amenable number.

11221124212 is a deficient number, since it is larger than the sum of its proper divisors (8415843166).

11221124212 is a wasteful number, since it uses less digits than its factorization.

11221124212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805281057 (or 2805281055 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

Adding to 11221124212 its reverse (21242112211), we get a palindrome (32463236423).

The spelling of 11221124212 in words is "eleven billion, two hundred twenty-one million, one hundred twenty-four thousand, two hundred twelve".