1321201203 has 8 divisors (see below), whose sum is σ = 2013259008. Its totient is φ = 754972104.

The previous prime is 1321201199. The next prime is 1321201229. The reversal of 1321201203 is 3021021231.

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

It is not a de Polignac number, because 1321201203 - 2² = 1321201199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321201243) 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, 31457151 + ... + 31457192.

It is an arithmetic number, because the mean of its divisors is an integer number (251657376).

Almost surely, 2^1321201203 is an apocalyptic number.

1321201203 is a deficient number, since it is larger than the sum of its proper divisors (692057805).

1321201203 is an equidigital number, since it uses as much as digits as its factorization.

1321201203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62914353.

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

The square root of 1321201203 is about 36348.3315022849. The cubic root of 1321201203 is about 1097.2939553663.

Adding to 1321201203 its reverse (3021021231), we get a palindrome (4342222434).

The spelling of 1321201203 in words is "one billion, three hundred twenty-one million, two hundred one thousand, two hundred three".