1221032131203 has 8 divisors (see below), whose sum is σ = 1628347113216. Its totient is φ = 813869285000.

The previous prime is 1221032131169. The next prime is 1221032131237. The reversal of 1221032131203 is 3021312301221.

It is an interprime number because it is at equal distance from previous prime (1221032131169) and next prime (1221032131237).

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

It is a cyclic number.

It is not a de Polignac number, because 1221032131203 - 2¹³ = 1221032123011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1221032131203.

It is not an unprimeable number, because it can be changed into a prime (1221032131103) 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, 38015223 + ... + 38047328.

It is an arithmetic number, because the mean of its divisors is an integer number (203543389152).

Almost surely, 2^{1221032131203} is an apocalyptic number.

1221032131203 is a deficient number, since it is larger than the sum of its proper divisors (407314982013).

1221032131203 is an equidigital number, since it uses as much as digits as its factorization.

1221032131203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76067905.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221032131203 its reverse (3021312301221), we get a palindrome (4242344432424).

The spelling of 1221032131203 in words is "one trillion, two hundred twenty-one billion, thirty-two million, one hundred thirty-one thousand, two hundred three".