11212020228 has 24 divisors (see below), whose sum is σ = 26799464160. Its totient is φ = 3646185280.

The previous prime is 11212020191. The next prime is 11212020229. The reversal of 11212020228 is 82202021211.

It is not an unprimeable number, because it can be changed into a prime (11212020229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11393838 + ... + 11394821.

It is an arithmetic number, because the mean of its divisors is an integer number (1116644340).

Almost surely, 2^11212020228 is an apocalyptic number.

It is an amenable number.

11212020228 is an abundant number, since it is smaller than the sum of its proper divisors (15587443932).

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

11212020228 is a wasteful number, since it uses less digits than its factorization.

11212020228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22788707 (or 22788705 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11212020228 its reverse (82202021211), we get a palindrome (93414041439).

The spelling of 11212020228 in words is "eleven billion, two hundred twelve million, twenty thousand, two hundred twenty-eight".