1220755710243 has 8 divisors (see below), whose sum is σ = 1627754310400. Its totient is φ = 813797125128.

The previous prime is 1220755710217. The next prime is 1220755710247. The reversal of 1220755710243 is 3420175570221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220755710243 - 2⁹ = 1220755709731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220755710247) 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, 9932503 + ... + 10054656.

It is an arithmetic number, because the mean of its divisors is an integer number (203469288800).

Almost surely, 2^{1220755710243} is an apocalyptic number.

1220755710243 is a deficient number, since it is larger than the sum of its proper divisors (406998600157).

1220755710243 is a wasteful number, since it uses less digits than its factorization.

1220755710243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007521.

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 1220755710243 in words is "one trillion, two hundred twenty billion, seven hundred fifty-five million, seven hundred ten thousand, two hundred forty-three".