1031203123221 has 8 divisors (see below), whose sum is σ = 1394302814784. Its totient is φ = 677786090240.

The previous prime is 1031203123217. The next prime is 1031203123243. The reversal of 1031203123221 is 1223213021301.

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 1031203123221 - 2² = 1031203123217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031203123211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2420664396 + ... + 2420664821.

It is an arithmetic number, because the mean of its divisors is an integer number (174287851848).

Almost surely, 2^{1031203123221} is an apocalyptic number.

It is an amenable number.

1031203123221 is a deficient number, since it is larger than the sum of its proper divisors (363099691563).

1031203123221 is an equidigital number, since it uses as much as digits as its factorization.

1031203123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841329291.

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

Adding to 1031203123221 its reverse (1223213021301), we get a palindrome (2254416144522).

The spelling of 1031203123221 in words is "one trillion, thirty-one billion, two hundred three million, one hundred twenty-three thousand, two hundred twenty-one".