11021213232 has 120 divisors (see below), whose sum is σ = 32481477600. Its totient is φ = 3481657344.

The previous prime is 11021213213. The next prime is 11021213243. The reversal of 11021213232 is 23231212011.

It is a super-2 number, since 2×11021213232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345744 + ... + 376272.

It is an arithmetic number, because the mean of its divisors is an integer number (270678980).

Almost surely, 2^11021213232 is an apocalyptic number.

11021213232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021213232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16240738800).

11021213232 is an abundant number, since it is smaller than the sum of its proper divisors (21460264368).

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

11021213232 is a wasteful number, since it uses less digits than its factorization.

11021213232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30675 (or 30666 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11021213232 its reverse (23231212011), we get a palindrome (34252425243).

The spelling of 11021213232 in words is "eleven billion, twenty-one million, two hundred thirteen thousand, two hundred thirty-two".