1220410411555 has 8 divisors (see below), whose sum is σ = 1464970012272. Its totient is φ = 976009983648.

The previous prime is 1220410411553. The next prime is 1220410411621. The reversal of 1220410411555 is 5551140140221.

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 1220410411555 - 2¹ = 1220410411553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220410411553) 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, 39776332 + ... + 39807001.

It is an arithmetic number, because the mean of its divisors is an integer number (183121251534).

Almost surely, 2^{1220410411555} is an apocalyptic number.

1220410411555 is a deficient number, since it is larger than the sum of its proper divisors (244559600717).

1220410411555 is an equidigital number, since it uses as much as digits as its factorization.

1220410411555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79586405.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 1220410411555 its reverse (5551140140221), we get a palindrome (6771550551776).

The spelling of 1220410411555 in words is "one trillion, two hundred twenty billion, four hundred ten million, four hundred eleven thousand, five hundred fifty-five".