11211310220 has 24 divisors (see below), whose sum is σ = 25684093008. Its totient is φ = 4076840000.

The previous prime is 11211310217. The next prime is 11211310249. The reversal of 11211310220 is 2201311211.

It is a junction number, because it is equal to n+sod(n) for n = 11211310195 and 11211310204.

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, 25480031 + ... + 25480470.

It is an arithmetic number, because the mean of its divisors is an integer number (1070170542).

Almost surely, 2^11211310220 is an apocalyptic number.

11211310220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211310220 is an abundant number, since it is smaller than the sum of its proper divisors (14472782788).

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

11211310220 is a wasteful number, since it uses less digits than its factorization.

11211310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50960521 (or 50960519 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11211310220 its reverse (2201311211), we get a palindrome (13412621431).

Subtracting from 11211310220 its reverse (2201311211), we obtain a palindrome (9009999009).

The spelling of 11211310220 in words is "eleven billion, two hundred eleven million, three hundred ten thousand, two hundred twenty".