1123203123221 has 8 divisors (see below), whose sum is σ = 1125613786080. Its totient is φ = 1120794152688.

The previous prime is 1123203123193. The next prime is 1123203123239. The reversal of 1123203123221 is 1223213023211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123203123221 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 (1123203123421) 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, 910250 + ... + 1753556.

It is an arithmetic number, because the mean of its divisors is an integer number (140701723260).

Almost surely, 2^{1123203123221} is an apocalyptic number.

It is an amenable number.

1123203123221 is a deficient number, since it is larger than the sum of its proper divisors (2410662859).

1123203123221 is an equidigital number, since it uses as much as digits as its factorization.

1123203123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846163.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1123203123221 its reverse (1223213023211), we get a palindrome (2346416146432).

The spelling of 1123203123221 in words is "one trillion, one hundred twenty-three billion, two hundred three million, one hundred twenty-three thousand, two hundred twenty-one".