12001221111203 has 2 divisors, whose sum is σ = 12001221111204. Its totient is φ = 12001221111202.

The previous prime is 12001221111149. The next prime is 12001221111259. The reversal of 12001221111203 is 30211112210021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001221111203 - 2⁸ = 12001221110947 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001221011203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610555601 + 6000610555602.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610555602).

Almost surely, 2^{12001221111203} is an apocalyptic number.

12001221111203 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001221111203 is an equidigital number, since it uses as much as digits as its factorization.

12001221111203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12001221111203 its reverse (30211112210021), we get a palindrome (42212333321224).

The spelling of 12001221111203 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred eleven thousand, two hundred three".