1220355234455 has 8 divisors (see below), whose sum is σ = 1673630035872. Its totient is φ = 836815017888.

The previous prime is 1220355234443. The next prime is 1220355234487. The reversal of 1220355234455 is 5544325530221.

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 1220355234455 - 2²⁸ = 1220086798999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17433646172 + ... + 17433646241.

It is an arithmetic number, because the mean of its divisors is an integer number (209203754484).

Almost surely, 2^{1220355234455} is an apocalyptic number.

1220355234455 is a deficient number, since it is larger than the sum of its proper divisors (453274801417).

1220355234455 is an equidigital number, since it uses as much as digits as its factorization.

1220355234455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34867292425.

The product of its (nonzero) digits is 720000, while the sum is 41.

The spelling of 1220355234455 in words is "one trillion, two hundred twenty billion, three hundred fifty-five million, two hundred thirty-four thousand, four hundred fifty-five".