211021021201 has 4 divisors (see below), whose sum is σ = 211030566400. Its totient is φ = 211011476004.

The previous prime is 211021021171. The next prime is 211021021213. The reversal of 211021021201 is 102120120112.

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-211021021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211021021501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4739361 + ... + 4783678.

It is an arithmetic number, because the mean of its divisors is an integer number (52757641600).

Almost surely, 2^211021021201 is an apocalyptic number.

It is an amenable number.

211021021201 is a deficient number, since it is larger than the sum of its proper divisors (9545199).

211021021201 is an equidigital number, since it uses as much as digits as its factorization.

211021021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9545198.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211021021201 its reverse (102120120112), we get a palindrome (313141141313).

The spelling of 211021021201 in words is "two hundred eleven billion, twenty-one million, twenty-one thousand, two hundred one".