1220512404543 has 8 divisors (see below), whose sum is σ = 1627388998656. Its totient is φ = 813655373400.

The previous prime is 1220512404523. The next prime is 1220512404577. The reversal of 1220512404543 is 3454042150221.

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

It is not a de Polignac number, because 1220512404543 - 2¹² = 1220512400447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220512404523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4744543 + ... + 4995168.

It is an arithmetic number, because the mean of its divisors is an integer number (203423624832).

Almost surely, 2^{1220512404543} is an apocalyptic number.

1220512404543 is a deficient number, since it is larger than the sum of its proper divisors (406876594113).

1220512404543 is an equidigital number, since it uses as much as digits as its factorization.

1220512404543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9781485.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 1220512404543 its reverse (3454042150221), we get a palindrome (4674554554764).

The spelling of 1220512404543 in words is "one trillion, two hundred twenty billion, five hundred twelve million, four hundred four thousand, five hundred forty-three".