201214091 has 8 divisors (see below), whose sum is σ = 229438944. Its totient is φ = 174810240.

The previous prime is 201214073. The next prime is 201214099. The reversal of 201214091 is 190412102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201214091 is a prime.

It is a super-2 number, since 2×201214091² = 80974220833912562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201214099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455015 + ... + 455456.

It is an arithmetic number, because the mean of its divisors is an integer number (28679868).

Almost surely, 2^201214091 is an apocalyptic number.

201214091 is a deficient number, since it is larger than the sum of its proper divisors (28224853).

201214091 is a wasteful number, since it uses less digits than its factorization.

201214091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910501.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 201214091 is about 14184.9952767000. The cubic root of 201214091 is about 585.9845024188.

Adding to 201214091 its reverse (190412102), we get a palindrome (391626193).

The spelling of 201214091 in words is "two hundred one million, two hundred fourteen thousand, ninety-one".