223021122030 has 144 divisors (see below), whose sum is σ = 677350589760. Its totient is φ = 50762726784.

The previous prime is 223021122017. The next prime is 223021122031. The reversal of 223021122030 is 30221120322.

223021122030 is a `hidden beast` number, since 2 + 230 + 211 + 220 + 3 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 223021121994 and 223021122012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223021122031) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 948192 + ... + 1159788.

It is an arithmetic number, because the mean of its divisors is an integer number (4703823540).

Almost surely, 2^223021122030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223021122030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338675294880).

223021122030 is an abundant number, since it is smaller than the sum of its proper divisors (454329467730).

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

223021122030 is a wasteful number, since it uses less digits than its factorization.

223021122030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211863 (or 211853 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 223021122030 its reverse (30221120322), we get a palindrome (253242242352).

The spelling of 223021122030 in words is "two hundred twenty-three billion, twenty-one million, one hundred twenty-two thousand, thirty".