223112511020 has 48 divisors (see below), whose sum is σ = 538676490240. Its totient is φ = 76037651904.

The previous prime is 223112511019. The next prime is 223112511023. The reversal of 223112511020 is 20115211322.

It is a super-3 number, since 3×223112511020³ (a number of 35 digits) contains 333 as substring.

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 = 223112510983 and 223112511001.

It is not an unprimeable number, because it can be changed into a prime (223112511023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4748060 + ... + 4794819.

It is an arithmetic number, because the mean of its divisors is an integer number (11222426880).

Almost surely, 2^223112511020 is an apocalyptic number.

223112511020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223112511020 is an abundant number, since it is smaller than the sum of its proper divisors (315563979220).

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

223112511020 is a wasteful number, since it uses less digits than its factorization.

223112511020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543062 (or 9543060 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 223112511020 its reverse (20115211322), we get a palindrome (243227722342).

The spelling of 223112511020 in words is "two hundred twenty-three billion, one hundred twelve million, five hundred eleven thousand, twenty".