1223223122220 has 96 divisors (see below), whose sum is σ = 3745526883840. Its totient is φ = 295813839360.

The previous prime is 1223223122197. The next prime is 1223223122267. The reversal of 1223223122220 is 222213223221.

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, 1995792 + ... + 2535671.

It is an arithmetic number, because the mean of its divisors is an integer number (39015905040).

Almost surely, 2^{1223223122220} is an apocalyptic number.

1223223122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223223122220 is an abundant number, since it is smaller than the sum of its proper divisors (2522303761620).

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

1223223122220 is a wasteful number, since it uses less digits than its factorization.

1223223122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531895 (or 4531893 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1223223122220 its reverse (222213223221), we get a palindrome (1445436345441).

The spelling of 1223223122220 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-three million, one hundred twenty-two thousand, two hundred twenty".