1221450314203 has 4 divisors (see below), whose sum is σ = 1395943216240. Its totient is φ = 1046957412168.

The previous prime is 1221450314191. The next prime is 1221450314207. The reversal of 1221450314203 is 3024130541221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1221450314203 - 2⁵ = 1221450314171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221450314207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87246451008 + ... + 87246451021.

It is an arithmetic number, because the mean of its divisors is an integer number (348985804060).

Almost surely, 2^{1221450314203} is an apocalyptic number.

1221450314203 is a deficient number, since it is larger than the sum of its proper divisors (174492902037).

1221450314203 is an equidigital number, since it uses as much as digits as its factorization.

1221450314203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174492902036.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1221450314203 its reverse (3024130541221), we get a palindrome (4245580855424).

The spelling of 1221450314203 in words is "one trillion, two hundred twenty-one billion, four hundred fifty million, three hundred fourteen thousand, two hundred three".