1001214191 has 8 divisors (see below), whose sum is σ = 1028669424. Its totient is φ = 973779840.

The previous prime is 1001214187. The next prime is 1001214211. The reversal of 1001214191 is 1914121001.

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 1001214191 - 2² = 1001214187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001214121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188711 + ... + 193943.

It is an arithmetic number, because the mean of its divisors is an integer number (128583678).

Almost surely, 2^1001214191 is an apocalyptic number.

1001214191 is a deficient number, since it is larger than the sum of its proper divisors (27455233).

1001214191 is an equidigital number, since it uses as much as digits as its factorization.

1001214191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1001214191 is about 31641.9688230679. The cubic root of 1001214191 is about 1000.4045666371.

Adding to 1001214191 its reverse (1914121001), we get a palindrome (2915335192).

The spelling of 1001214191 in words is "one billion, one million, two hundred fourteen thousand, one hundred ninety-one".