11020223220 has 144 divisors (see below), whose sum is σ = 32870178432. Its totient is φ = 2757497600.

The previous prime is 11020223219. The next prime is 11020223233. The reversal of 11020223220 is 2232202011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11020223220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1678945 + ... + 1685495.

It is an arithmetic number, because the mean of its divisors is an integer number (228265128).

Almost surely, 2^11020223220 is an apocalyptic number.

11020223220 is a gapful number since it is divisible by the number (10) 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 11020223220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16435089216).

11020223220 is an abundant number, since it is smaller than the sum of its proper divisors (21849955212).

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

11020223220 is a wasteful number, since it uses less digits than its factorization.

11020223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662 (or 6637 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 11020223220 its reverse (2232202011), we get a palindrome (13252425231).

The spelling of 11020223220 in words is "eleven billion, twenty million, two hundred twenty-three thousand, two hundred twenty".