1321124203 has 16 divisors (see below), whose sum is σ = 1564390080. Its totient is φ = 1091615616.

The previous prime is 1321124171. The next prime is 1321124219. The reversal of 1321124203 is 3024211231.

It is a happy number.

It is not a de Polignac number, because 1321124203 - 2⁵ = 1321124171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321124243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132625 + ... + 142237.

It is an arithmetic number, because the mean of its divisors is an integer number (97774380).

Almost surely, 2^1321124203 is an apocalyptic number.

1321124203 is a deficient number, since it is larger than the sum of its proper divisors (243265877).

1321124203 is an equidigital number, since it uses as much as digits as its factorization.

1321124203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1321124203 is about 36347.2722910537. The cubic root of 1321124203 is about 1097.2726380792.

Adding to 1321124203 its reverse (3024211231), we get a palindrome (4345335434).

The spelling of 1321124203 in words is "one billion, three hundred twenty-one million, one hundred twenty-four thousand, two hundred three".