1220003564405 has 16 divisors (see below), whose sum is σ = 1527694007040. Its totient is φ = 933545107968.

The previous prime is 1220003564399. The next prime is 1220003564407. The reversal of 1220003564405 is 5044653000221.

It is a cyclic number.

It is not a de Polignac number, because 1220003564405 - 2⁴⁰ = 120491936629 is a prime.

It is a super-3 number, since 3×1220003564405³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220003564407) 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 15 ways as a sum of consecutive naturals, for example, 5742149 + ... + 5950821.

It is an arithmetic number, because the mean of its divisors is an integer number (95480875440).

Almost surely, 2^{1220003564405} is an apocalyptic number.

It is an amenable number.

1220003564405 is a deficient number, since it is larger than the sum of its proper divisors (307690442635).

1220003564405 is a wasteful number, since it uses less digits than its factorization.

1220003564405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259540.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1220003564405 its reverse (5044653000221), we get a palindrome (6264656564626).

The spelling of 1220003564405 in words is "one trillion, two hundred twenty billion, three million, five hundred sixty-four thousand, four hundred five".