1221233230320 has 40 divisors (see below), whose sum is σ = 3785823014736. Its totient is φ = 325662194688.

The previous prime is 1221233230319. The next prime is 1221233230403. The reversal of 1221233230320 is 230323321221.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 2544235657 + ... + 2544236136.

Almost surely, 2^{1221233230320} is an apocalyptic number.

1221233230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221233230320 is an abundant number, since it is smaller than the sum of its proper divisors (2564589784416).

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

1221233230320 is a wasteful number, since it uses less digits than its factorization.

1221233230320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088471809 (or 5088471803 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1221233230320 its reverse (230323321221), we get a palindrome (1451556551541).

Subtracting from 1221233230320 its reverse (230323321221), we obtain a palindrome (990909909099).

The spelling of 1221233230320 in words is "one trillion, two hundred twenty-one billion, two hundred thirty-three million, two hundred thirty thousand, three hundred twenty".