11212420224 has 64 divisors (see below), whose sum is σ = 30509448480. Its totient is φ = 3646310400.

The previous prime is 11212420223. The next prime is 11212420229. The reversal of 11212420224 is 42202421211.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 11212420224.

It is not an unprimeable number, because it can be changed into a prime (11212420223) 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, 340342 + ... + 371829.

Almost surely, 2^11212420224 is an apocalyptic number.

It is an amenable number.

11212420224 is an abundant number, since it is smaller than the sum of its proper divisors (19297028256).

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

11212420224 is an equidigital number, since it uses as much as digits as its factorization.

11212420224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712229 (or 712217 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 11212420224 its reverse (42202421211), we get a palindrome (53414841435).

The spelling of 11212420224 in words is "eleven billion, two hundred twelve million, four hundred twenty thousand, two hundred twenty-four".