201021202212001 has 4 divisors (see below), whose sum is σ = 209761254482112. Its totient is φ = 192281149941892.

The previous prime is 201021202211957. The next prime is 201021202212011. The reversal of 201021202212001 is 100212202120102.

It is a happy number.

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 not a de Polignac number, because 201021202212001 - 2¹¹ = 201021202209953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201021202212011) 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, 4370026135021 + ... + 4370026135066.

It is an arithmetic number, because the mean of its divisors is an integer number (52440313620528).

Almost surely, 2^{201021202212001} is an apocalyptic number.

It is an amenable number.

201021202212001 is a deficient number, since it is larger than the sum of its proper divisors (8740052270111).

201021202212001 is an equidigital number, since it uses as much as digits as its factorization.

201021202212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740052270110.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201021202212001 its reverse (100212202120102), we get a palindrome (301233404332103).

The spelling of 201021202212001 in words is "two hundred one trillion, twenty-one billion, two hundred two million, two hundred twelve thousand, one".