1321120000203 has 8 divisors (see below), whose sum is σ = 1761688939008. Its totient is φ = 880648864104.

The previous prime is 1321120000199. The next prime is 1321120000219. The reversal of 1321120000203 is 3020000211231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321120000203 - 2² = 1321120000199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321120000223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24419151 + ... + 24473192.

It is an arithmetic number, because the mean of its divisors is an integer number (220211117376).

Almost surely, 2^{1321120000203} is an apocalyptic number.

1321120000203 is a deficient number, since it is larger than the sum of its proper divisors (440568938805).

1321120000203 is an equidigital number, since it uses as much as digits as its factorization.

1321120000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48901353.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1321120000203 its reverse (3020000211231), we get a palindrome (4341120211434).

The spelling of 1321120000203 in words is "one trillion, three hundred twenty-one billion, one hundred twenty million, two hundred three", and thus it is an aban number.