1221123034203 has 8 divisors (see below), whose sum is σ = 1640048455248. Its totient is φ = 808139817984.

The previous prime is 1221123034193. The next prime is 1221123034247. The reversal of 1221123034203 is 3024303211221.

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

It is not a de Polignac number, because 1221123034203 - 2³⁰ = 1220049292379 is a prime.

It is a super-2 number, since 2×1221123034203² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221123074203) 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, 1485550726 + ... + 1485551547.

It is an arithmetic number, because the mean of its divisors is an integer number (205006056906).

Almost surely, 2^{1221123034203} is an apocalyptic number.

1221123034203 is a deficient number, since it is larger than the sum of its proper divisors (418925421045).

1221123034203 is a wasteful number, since it uses less digits than its factorization.

1221123034203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971102413.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1221123034203 its reverse (3024303211221), we get a palindrome (4245426245424).

The spelling of 1221123034203 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-three million, thirty-four thousand, two hundred three".