11021222212 has 96 divisors (see below), whose sum is σ = 26153374464. Its totient is φ = 3924288000.

The previous prime is 11021222209. The next prime is 11021222237. The reversal of 11021222212 is 21222212011.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 390778 + ... + 418030.

It is an arithmetic number, because the mean of its divisors is an integer number (272430984).

Almost surely, 2^11021222212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13076687232).

11021222212 is an abundant number, since it is smaller than the sum of its proper divisors (15132152252).

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

11021222212 is a wasteful number, since it uses less digits than its factorization.

11021222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27389 (or 27387 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11021222212 its reverse (21222212011), we get a palindrome (32243434223).

The spelling of 11021222212 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, two hundred twelve".