1243216116601 has 8 divisors (see below), whose sum is σ = 1243707300864. Its totient is φ = 1242725039520.

The previous prime is 1243216116551. The next prime is 1243216116643. The reversal of 1243216116601 is 1066116123421.

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 1243216116601 - 2²⁵ = 1243182562169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243216116691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29030461 + ... + 29073253.

It is an arithmetic number, because the mean of its divisors is an integer number (155463412608).

Almost surely, 2^{1243216116601} is an apocalyptic number.

It is an amenable number.

1243216116601 is a deficient number, since it is larger than the sum of its proper divisors (491184263).

1243216116601 is an equidigital number, since it uses as much as digits as its factorization.

1243216116601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53591.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 1243216116601 in words is "one trillion, two hundred forty-three billion, two hundred sixteen million, one hundred sixteen thousand, six hundred one".