1233121003221 has 8 divisors (see below), whose sum is σ = 1644863679904. Its totient is φ = 821729497680.

The previous prime is 1233121003211. The next prime is 1233121003229. The reversal of 1233121003221 is 1223001213321.

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

It is a de Polignac number, because none of the positive numbers 2^k-1233121003221 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 (1233121003229) 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, 87784591 + ... + 87798636.

It is an arithmetic number, because the mean of its divisors is an integer number (205607959988).

Almost surely, 2^{1233121003221} is an apocalyptic number.

It is an amenable number.

1233121003221 is a deficient number, since it is larger than the sum of its proper divisors (411742676683).

1233121003221 is a wasteful number, since it uses less digits than its factorization.

1233121003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175585571.

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

Adding to 1233121003221 its reverse (1223001213321), we get a palindrome (2456122216542).

The spelling of 1233121003221 in words is "one trillion, two hundred thirty-three billion, one hundred twenty-one million, three thousand, two hundred twenty-one".