1201143001 has 2 divisors, whose sum is σ = 1201143002. Its totient is φ = 1201143000.

The previous prime is 1201142993. The next prime is 1201143023. The reversal of 1201143001 is 1003411021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183704025 + 17438976 = 34405^2 + 4176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201143001 - 2³ = 1201142993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201143091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600571500 + 600571501.

It is an arithmetic number, because the mean of its divisors is an integer number (600571501).

Almost surely, 2^1201143001 is an apocalyptic number.

It is an amenable number.

1201143001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201143001 is an equidigital number, since it uses as much as digits as its factorization.

1201143001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1201143001 is about 34657.5100230816. The cubic root of 1201143001 is about 1062.9958565073.

Adding to 1201143001 its reverse (1003411021), we get a palindrome (2204554022).

The spelling of 1201143001 in words is "one billion, two hundred one million, one hundred forty-three thousand, one".