201212001 has 12 divisors (see below), whose sum is σ = 293906340. Its totient is φ = 132633600.

The previous prime is 201211999. The next prime is 201212021. The reversal of 201212001 is 100212102.

201212001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 64883025 + 136328976 = 8055^2 + 11676^2 .

It is not a de Polignac number, because 201212001 - 2¹ = 201211999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (201212021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124800 + ... + 126401.

It is an arithmetic number, because the mean of its divisors is an integer number (24492195).

Almost surely, 2^201212001 is an apocalyptic number.

It is an amenable number.

201212001 is a deficient number, since it is larger than the sum of its proper divisors (92694339).

201212001 is a wasteful number, since it uses less digits than its factorization.

201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251296 (or 251293 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 201212001 is about 14184.9216071151. The cubic root of 201212001 is about 585.9824735485.

Adding to 201212001 its reverse (100212102), we get a palindrome (301424103).

It can be divided in two parts, 20121 and 2001, that added together give a palindrome (22122).

The spelling of 201212001 in words is "two hundred one million, two hundred twelve thousand, one".