1203221201243 has 16 divisors (see below), whose sum is σ = 1254437521920. Its totient is φ = 1153243544544.

The previous prime is 1203221201227. The next prime is 1203221201251. The reversal of 1203221201243 is 3421021223021.

It is a cyclic number.

It is not a de Polignac number, because 1203221201243 - 2⁴ = 1203221201227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203221203243) 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, 532796 + ... + 1640217.

It is an arithmetic number, because the mean of its divisors is an integer number (78402345120).

Almost surely, 2^{1203221201243} is an apocalyptic number.

1203221201243 is a deficient number, since it is larger than the sum of its proper divisors (51216320677).

1203221201243 is a wasteful number, since it uses less digits than its factorization.

1203221201243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173298.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1203221201243 its reverse (3421021223021), we get a palindrome (4624242424264).

The spelling of 1203221201243 in words is "one trillion, two hundred three billion, two hundred twenty-one million, two hundred one thousand, two hundred forty-three".