11213323220 has 24 divisors (see below), whose sum is σ = 25688704608. Its totient is φ = 4077572000.

The previous prime is 11213323217. The next prime is 11213323241. The reversal of 11213323220 is 2232331211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11213323192 and 11213323201.

It is a congruent number.

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, 25484606 + ... + 25485045.

It is an arithmetic number, because the mean of its divisors is an integer number (1070362692).

Almost surely, 2^11213323220 is an apocalyptic number.

11213323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213323220 is an abundant number, since it is smaller than the sum of its proper divisors (14475381388).

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

11213323220 is a wasteful number, since it uses less digits than its factorization.

11213323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50969671 (or 50969669 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 11213323220 its reverse (2232331211), we get a palindrome (13445654431).

It can be divided in two parts, 11213 and 323220, that added together give a palindrome (334433).

The spelling of 11213323220 in words is "eleven billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred twenty".