223111020 has 96 divisors (see below), whose sum is σ = 688455936. Its totient is φ = 53536000.

The previous prime is 223111019. The next prime is 223111051. The reversal of 223111020 is 20111322.

It is a super-3 number, since 3×223111020³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 223110987 and 223111005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64987 + ... + 68333.

It is an arithmetic number, because the mean of its divisors is an integer number (7171416).

Almost surely, 2^223111020 is an apocalyptic number.

223111020 is a gapful number since it is divisible by the number (20) 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 223111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344227968).

223111020 is an abundant number, since it is smaller than the sum of its proper divisors (465344916).

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

223111020 is a wasteful number, since it uses less digits than its factorization.

223111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471 (or 3469 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 223111020 is about 14936.9012850725. The cubic root of 223111020 is about 606.5133164442.

Adding to 223111020 its reverse (20111322), we get a palindrome (243222342).

The spelling of 223111020 in words is "two hundred twenty-three million, one hundred eleven thousand, twenty".