1220432513205 has 8 divisors (see below), whose sum is σ = 1952692021152. Its totient is φ = 650897340368.

The previous prime is 1220432513159. The next prime is 1220432513221. The reversal of 1220432513205 is 5023152340221.

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

It is a cyclic number.

It is not a de Polignac number, because 1220432513205 - 2⁶ = 1220432513141 is a prime.

It is a super-3 number, since 3×1220432513205³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 40681083759 + ... + 40681083788.

It is an arithmetic number, because the mean of its divisors is an integer number (244086502644).

Almost surely, 2^{1220432513205} is an apocalyptic number.

1220432513205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220432513205 is a deficient number, since it is larger than the sum of its proper divisors (732259507947).

1220432513205 is an equidigital number, since it uses as much as digits as its factorization.

1220432513205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81362167555.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 1220432513205 its reverse (5023152340221), we get a palindrome (6243584853426).

The spelling of 1220432513205 in words is "one trillion, two hundred twenty billion, four hundred thirty-two million, five hundred thirteen thousand, two hundred five".