1220544223355 has 8 divisors (see below), whose sum is σ = 1464703175952. Its totient is φ = 976401973408.

The previous prime is 1220544223337. The next prime is 1220544223397. The reversal of 1220544223355 is 5533224450221.

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 1220544223355 - 2²⁶ = 1220477114491 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, 4014329 + ... + 4307658.

It is an arithmetic number, because the mean of its divisors is an integer number (183087896994).

Almost surely, 2^{1220544223355} is an apocalyptic number.

1220544223355 is a deficient number, since it is larger than the sum of its proper divisors (244158952597).

1220544223355 is an equidigital number, since it uses as much as digits as its factorization.

1220544223355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351325.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 1220544223355 its reverse (5533224450221), we get a palindrome (6753768673576).

The spelling of 1220544223355 in words is "one trillion, two hundred twenty billion, five hundred forty-four million, two hundred twenty-three thousand, three hundred fifty-five".