1203320311220 has 12 divisors (see below), whose sum is σ = 2526972653604. Its totient is φ = 481328124480.

The previous prime is 1203320311213. The next prime is 1203320311231. The reversal of 1203320311220 is 221130233021.

It can be written as a sum of positive squares in 2 ways, for example, as 164298894244 + 1039021416976 = 405338^2 + 1019324^2 .

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: 60166015561 = 1203320311220 / (1 + 2 + 0 + 3 + 3 + 2 + 0 + 3 + 1 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1203320311192 and 1203320311201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30083007761 + ... + 30083007800.

It is an arithmetic number, because the mean of its divisors is an integer number (210581054467).

Almost surely, 2^{1203320311220} is an apocalyptic number.

1203320311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203320311220 is an abundant number, since it is smaller than the sum of its proper divisors (1323652342384).

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

1203320311220 is a wasteful number, since it uses less digits than its factorization.

1203320311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60166015570 (or 60166015568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1203320311220 its reverse (221130233021), we get a palindrome (1424450544241).

The spelling of 1203320311220 in words is "one trillion, two hundred three billion, three hundred twenty million, three hundred eleven thousand, two hundred twenty".