11233223220 has 48 divisors (see below), whose sum is σ = 31479856128. Its totient is φ = 2992970880.

The previous prime is 11233223201. The next prime is 11233223231. The reversal of 11233223220 is 2232233211.

It is a happy number.

It is a congruent number.

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, 8404 + ... + 150123.

It is an arithmetic number, because the mean of its divisors is an integer number (655830336).

Almost surely, 2^11233223220 is an apocalyptic number.

11233223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11233223220 is an abundant number, since it is smaller than the sum of its proper divisors (20246632908).

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

11233223220 is a wasteful number, since it uses less digits than its factorization.

11233223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159720 (or 159718 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 11233223220 its reverse (2232233211), we get a palindrome (13465456431).

Subtracting from 11233223220 its reverse (2232233211), we obtain a palindrome (9000990009).

The spelling of 11233223220 in words is "eleven billion, two hundred thirty-three million, two hundred twenty-three thousand, two hundred twenty".