211020222201 has 4 divisors (see below), whose sum is σ = 281360296272. Its totient is φ = 140680148132.

The previous prime is 211020222197. The next prime is 211020222229. The reversal of 211020222201 is 102222020112.

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 211020222201 - 2² = 211020222197 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211020222251) 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, 35170037031 + ... + 35170037036.

It is an arithmetic number, because the mean of its divisors is an integer number (70340074068).

Almost surely, 2^211020222201 is an apocalyptic number.

It is an amenable number.

211020222201 is a deficient number, since it is larger than the sum of its proper divisors (70340074071).

211020222201 is an equidigital number, since it uses as much as digits as its factorization.

211020222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70340074070.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 211020222201 its reverse (102222020112), we get a palindrome (313242242313).

The spelling of 211020222201 in words is "two hundred eleven billion, twenty million, two hundred twenty-two thousand, two hundred one".