1220713355 has 8 divisors (see below), whose sum is σ = 1469629392. Its totient is φ = 973388448.

The previous prime is 1220713321. The next prime is 1220713367. The reversal of 1220713355 is 5533170221.

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 1220713355 - 2¹⁰ = 1220712331 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, 396092 + ... + 399161.

It is an arithmetic number, because the mean of its divisors is an integer number (183703674).

Almost surely, 2^1220713355 is an apocalyptic number.

1220713355 is a deficient number, since it is larger than the sum of its proper divisors (248916037).

1220713355 is an equidigital number, since it uses as much as digits as its factorization.

1220713355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795565.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 1220713355 is about 34938.7085479701. The cubic root of 1220713355 is about 1068.7379521458.

Adding to 1220713355 its reverse (5533170221), we get a palindrome (6753883576).

The spelling of 1220713355 in words is "one billion, two hundred twenty million, seven hundred thirteen thousand, three hundred fifty-five".