211002022201 has 4 divisors (see below), whose sum is σ = 211213660132. Its totient is φ = 210790384272.

The previous prime is 211002022151. The next prime is 211002022211. The reversal of 211002022201 is 102220200112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181855338025 + 29146684176 = 426445^2 + 170724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211002022201 is a prime.

It is a super-2 number, since 2×211002022201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211002022211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105817470 + ... + 105819463.

It is an arithmetic number, because the mean of its divisors is an integer number (52803415033).

Almost surely, 2^211002022201 is an apocalyptic number.

It is an amenable number.

211002022201 is a deficient number, since it is larger than the sum of its proper divisors (211637931).

211002022201 is an equidigital number, since it uses as much as digits as its factorization.

211002022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211637930.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211002022201 its reverse (102220200112), we get a palindrome (313222222313).

The spelling of 211002022201 in words is "two hundred eleven billion, two million, twenty-two thousand, two hundred one".