11212002220 has 24 divisors (see below), whose sum is σ = 24784426800. Its totient is φ = 4248758592.

The previous prime is 11212002203. The next prime is 11212002247. The reversal of 11212002220 is 2220021211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212002220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14752255 + ... + 14753014.

It is an arithmetic number, because the mean of its divisors is an integer number (1032684450).

Almost surely, 2^11212002220 is an apocalyptic number.

11212002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212002220 is an abundant number, since it is smaller than the sum of its proper divisors (13572424580).

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

11212002220 is a wasteful number, since it uses less digits than its factorization.

11212002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29505297 (or 29505295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 11212002220 its reverse (2220021211), we get a palindrome (13432023431).

The spelling of 11212002220 in words is "eleven billion, two hundred twelve million, two thousand, two hundred twenty".