1220404203355 has 8 divisors (see below), whose sum is σ = 1468411279632. Its totient is φ = 973705872288.

The previous prime is 1220404203349. The next prime is 1220404203371. The reversal of 1220404203355 is 5533024040221.

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 1220404203355 - 2¹¹ = 1220404201307 is a prime.

It is a Duffinian 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, 327184249 + ... + 327187978.

It is an arithmetic number, because the mean of its divisors is an integer number (183551409954).

Almost surely, 2^{1220404203355} is an apocalyptic number.

1220404203355 is a deficient number, since it is larger than the sum of its proper divisors (248007076277).

1220404203355 is an equidigital number, since it uses as much as digits as its factorization.

1220404203355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654372605.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 1220404203355 its reverse (5533024040221), we get a palindrome (6753428243576).

The spelling of 1220404203355 in words is "one trillion, two hundred twenty billion, four hundred four million, two hundred three thousand, three hundred fifty-five".