222123231020 has 24 divisors (see below), whose sum is σ = 466662308784. Its totient is φ = 88810526016.

The previous prime is 222123231019. The next prime is 222123231047. The reversal of 222123231020 is 20132321222.

It is a happy number.

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 = 222123230983 and 222123231001.

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, 2375894 + ... + 2467613.

It is an arithmetic number, because the mean of its divisors is an integer number (19444262866).

Almost surely, 2^222123231020 is an apocalyptic number.

222123231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222123231020 is an abundant number, since it is smaller than the sum of its proper divisors (244539077764).

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

222123231020 is a wasteful number, since it uses less digits than its factorization.

222123231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845809 (or 4845807 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 222123231020 its reverse (20132321222), we get a palindrome (242255552242).

The spelling of 222123231020 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred thirty-one thousand, twenty".