1220435104505 has 32 divisors (see below), whose sum is σ = 1554479506944. Its totient is φ = 916660417536.

The previous prime is 1220435104501. The next prime is 1220435104517. The reversal of 1220435104505 is 5054015340221.

It is a cyclic number.

It is not a de Polignac number, because 1220435104505 - 2² = 1220435104501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220435104501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114449804 + ... + 114460466.

It is an arithmetic number, because the mean of its divisors is an integer number (48577484592).

Almost surely, 2^{1220435104505} is an apocalyptic number.

It is an amenable number.

1220435104505 is a deficient number, since it is larger than the sum of its proper divisors (334044402439).

1220435104505 is a wasteful number, since it uses less digits than its factorization.

1220435104505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13865.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 1220435104505 in words is "one trillion, two hundred twenty billion, four hundred thirty-five million, one hundred four thousand, five hundred five".