1221033103001 has 4 divisors (see below), whose sum is σ = 1222275253632. Its totient is φ = 1219790952372.

The previous prime is 1221033102979. The next prime is 1221033103079. The reversal of 1221033103001 is 1003013301221.

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 a de Polignac number, because none of the positive numbers 2^k-1221033103001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1221033102001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621073841 + ... + 621075806.

It is an arithmetic number, because the mean of its divisors is an integer number (305568813408).

Almost surely, 2^{1221033103001} is an apocalyptic number.

It is an amenable number.

1221033103001 is a deficient number, since it is larger than the sum of its proper divisors (1242150631).

1221033103001 is an equidigital number, since it uses as much as digits as its factorization.

1221033103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242150630.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1221033103001 its reverse (1003013301221), we get a palindrome (2224046404222).

The spelling of 1221033103001 in words is "one trillion, two hundred twenty-one billion, thirty-three million, one hundred three thousand, one".