1223001221013 has 128 divisors (see below), whose sum is σ = 2297756160000. Its totient is φ = 631880282880.

The previous prime is 1223001220997. The next prime is 1223001221027. The reversal of 1223001221013 is 3101221003221.

It is not a de Polignac number, because 1223001221013 - 2⁴ = 1223001220997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223001221033) 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 127 ways as a sum of consecutive naturals, for example, 2337838 + ... + 2812736.

It is an arithmetic number, because the mean of its divisors is an integer number (17951220000).

Almost surely, 2^{1223001221013} is an apocalyptic number.

1223001221013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1223001221013 is a deficient number, since it is larger than the sum of its proper divisors (1074754938987).

1223001221013 is a wasteful number, since it uses less digits than its factorization.

1223001221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474984 (or 474978 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1223001221013 its reverse (3101221003221), we get a palindrome (4324222224234).

The spelling of 1223001221013 in words is "one trillion, two hundred twenty-three billion, one million, two hundred twenty-one thousand, thirteen".