203212001 has 4 divisors (see below), whose sum is σ = 204243732. Its totient is φ = 202180272.

The previous prime is 203211997. The next prime is 203212003. The reversal of 203212001 is 100212302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107661376 + 95550625 = 10376^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 203212001 - 2² = 203211997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203212003) 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, 515570 + ... + 515963.

It is an arithmetic number, because the mean of its divisors is an integer number (51060933).

Almost surely, 2^203212001 is an apocalyptic number.

It is an amenable number.

203212001 is a deficient number, since it is larger than the sum of its proper divisors (1031731).

203212001 is a wasteful number, since it uses less digits than its factorization.

203212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031730.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 203212001 is about 14255.2446839751. The cubic root of 203212001 is about 587.9175854767.

Adding to 203212001 its reverse (100212302), we get a palindrome (303424303).

It can be divided in two parts, 20321 and 2001, that added together give a palindrome (22322).

The spelling of 203212001 in words is "two hundred three million, two hundred twelve thousand, one".