201213001 has 4 divisors (see below), whose sum is σ = 219505104. Its totient is φ = 182920900.

The previous prime is 201212941. The next prime is 201213007. The reversal of 201213001 is 100312102.

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 not a de Polignac number, because 201213001 - 2⁷ = 201212873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201213007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9146035 + ... + 9146056.

It is an arithmetic number, because the mean of its divisors is an integer number (54876276).

Almost surely, 2^201213001 is an apocalyptic number.

It is an amenable number.

201213001 is a deficient number, since it is larger than the sum of its proper divisors (18292103).

201213001 is a wasteful number, since it uses less digits than its factorization.

201213001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18292102.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201213001 is about 14184.9568557680. The cubic root of 201213001 is about 585.9834443016.

Adding to 201213001 its reverse (100312102), we get a palindrome (301525103).

The spelling of 201213001 in words is "two hundred one million, two hundred thirteen thousand, one".