1223230221020 has 12 divisors (see below), whose sum is σ = 2568783464184. Its totient is φ = 489292088400.

The previous prime is 1223230220957. The next prime is 1223230221061. The reversal of 1223230221020 is 201220323221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 61161511051 = 1223230221020 / (1 + 2 + 2 + 3 + 2 + 3 + 0 + 2 + 2 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1223230220983 and 1223230221001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30580755506 + ... + 30580755545.

It is an arithmetic number, because the mean of its divisors is an integer number (214065288682).

Almost surely, 2^{1223230221020} is an apocalyptic number.

1223230221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223230221020 is an abundant number, since it is smaller than the sum of its proper divisors (1345553243164).

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

1223230221020 is a wasteful number, since it uses less digits than its factorization.

1223230221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61161511060 (or 61161511058 counting only the distinct ones).

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

Adding to 1223230221020 its reverse (201220323221), we get a palindrome (1424450544241).

The spelling of 1223230221020 in words is "one trillion, two hundred twenty-three billion, two hundred thirty million, two hundred twenty-one thousand, twenty".