1143216601 has 2 divisors, whose sum is σ = 1143216602. Its totient is φ = 1143216600.

The previous prime is 1143216589. The next prime is 1143216617. The reversal of 1143216601 is 1066123411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864360000 + 278856601 = 29400^2 + 16699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143216601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1143216631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571608300 + 571608301.

It is an arithmetic number, because the mean of its divisors is an integer number (571608301).

Almost surely, 2^1143216601 is an apocalyptic number.

It is an amenable number.

1143216601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143216601 is an equidigital number, since it uses as much as digits as its factorization.

1143216601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1143216601 is about 33811.4862287951. The cubic root of 1143216601 is about 1045.6255195955.

The spelling of 1143216601 in words is "one billion, one hundred forty-three million, two hundred sixteen thousand, six hundred one".