201212401 has 8 divisors (see below), whose sum is σ = 222547304. Its totient is φ = 180714240.

The previous prime is 201212399. The next prime is 201212419. The reversal of 201212401 is 104212102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76108176 + 125104225 = 8724^2 + 11185^2 .

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 201212401 - 2¹ = 201212399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (201212491) 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 7 ways as a sum of consecutive naturals, for example, 208680 + ... + 209641.

It is an arithmetic number, because the mean of its divisors is an integer number (27818413).

Almost surely, 2^201212401 is an apocalyptic number.

It is an amenable number.

201212401 is a deficient number, since it is larger than the sum of its proper divisors (21334903).

201212401 is a wasteful number, since it uses less digits than its factorization.

201212401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418371.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 201212401 is about 14184.9357065868. The cubic root of 201212401 is about 585.9828618501.

Adding to 201212401 its reverse (104212102), we get a palindrome (305424503).

It can be divided in two parts, 20121 and 2401, that added together give a palindrome (22522).

The spelling of 201212401 in words is "two hundred one million, two hundred twelve thousand, four hundred one".