1201001141 has 4 divisors (see below), whose sum is σ = 1201499232. Its totient is φ = 1200503052.

The previous prime is 1201001129. The next prime is 1201001209. The reversal of 1201001141 is 1411001021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201001141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201001111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245411 + ... + 250256.

It is an arithmetic number, because the mean of its divisors is an integer number (300374808).

Almost surely, 2^1201001141 is an apocalyptic number.

It is an amenable number.

1201001141 is a deficient number, since it is larger than the sum of its proper divisors (498091).

1201001141 is an equidigital number, since it uses as much as digits as its factorization.

1201001141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498090.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1201001141 is about 34655.4633643817. The cubic root of 1201001141 is about 1062.9540067778.

Adding to 1201001141 its reverse (1411001021), we get a palindrome (2612002162).

The spelling of 1201001141 in words is "one billion, two hundred one million, one thousand, one hundred forty-one".