201212210001 has 32 divisors (see below), whose sum is σ = 320574153600. Its totient is φ = 110815738880.

The previous prime is 201212209949. The next prime is 201212210113. The reversal of 201212210001 is 100012212102.

It is not a de Polignac number, because 201212210001 - 2⁶ = 201212209937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201212210501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6167646 + ... + 6200183.

It is an arithmetic number, because the mean of its divisors is an integer number (10017942300).

Almost surely, 2^201212210001 is an apocalyptic number.

It is an amenable number.

201212210001 is a deficient number, since it is larger than the sum of its proper divisors (119361943599).

201212210001 is a wasteful number, since it uses less digits than its factorization.

201212210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12367889.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201212210001 its reverse (100012212102), we get a palindrome (301224422103).

The spelling of 201212210001 in words is "two hundred one billion, two hundred twelve million, two hundred ten thousand, one".