1203231020221 has 4 divisors (see below), whose sum is σ = 1203236904672. Its totient is φ = 1203225135772.

The previous prime is 1203231020203. The next prime is 1203231020231. The reversal of 1203231020221 is 1220201323021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1203231020221 - 2⁷ = 1203231020093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203231020231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624041 + ... + 3048286.

It is an arithmetic number, because the mean of its divisors is an integer number (300809226168).

Almost surely, 2^{1203231020221} is an apocalyptic number.

It is an amenable number.

1203231020221 is a deficient number, since it is larger than the sum of its proper divisors (5884451).

1203231020221 is an equidigital number, since it uses as much as digits as its factorization.

1203231020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884450.

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

Adding to 1203231020221 its reverse (1220201323021), we get a palindrome (2423432343242).

The spelling of 1203231020221 in words is "one trillion, two hundred three billion, two hundred thirty-one million, twenty thousand, two hundred twenty-one".