201020021212001 has 4 divisors (see below), whose sum is σ = 201021216313392. Its totient is φ = 201018826110612.

The previous prime is 201020021211917. The next prime is 201020021212007. The reversal of 201020021212001 is 100212120020102.

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 a de Polignac number, because none of the positive numbers 2^k-201020021212001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201020021212007) 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, 597298355 + ... + 597634808.

It is an arithmetic number, because the mean of its divisors is an integer number (50255304078348).

Almost surely, 2^{201020021212001} is an apocalyptic number.

It is an amenable number.

201020021212001 is a deficient number, since it is larger than the sum of its proper divisors (1195101391).

201020021212001 is a wasteful number, since it uses less digits than its factorization.

201020021212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195101390.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201020021212001 its reverse (100212120020102), we get a palindrome (301232141232103).

The spelling of 201020021212001 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred twelve thousand, one".