11021313220 has 48 divisors (see below), whose sum is σ = 23436241920. Its totient is φ = 4353138944.

The previous prime is 11021313217. The next prime is 11021313239. The reversal of 11021313220 is 2231312011.

It is a junction number, because it is equal to n+sod(n) for n = 11021313194 and 11021313203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468317 + ... + 1475803.

It is an arithmetic number, because the mean of its divisors is an integer number (488255040).

Almost surely, 2^11021313220 is an apocalyptic number.

11021313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021313220 is an abundant number, since it is smaller than the sum of its proper divisors (12414928700).

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

11021313220 is a wasteful number, since it uses less digits than its factorization.

11021313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412 (or 8410 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11021313220 its reverse (2231312011), we get a palindrome (13252625231).

The spelling of 11021313220 in words is "eleven billion, twenty-one million, three hundred thirteen thousand, two hundred twenty".