202211200021 has 4 divisors (see below), whose sum is σ = 206913786112. Its totient is φ = 197508613932.

The previous prime is 202211199977. The next prime is 202211200031. The reversal of 202211200021 is 120002112202.

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 202211200021 - 2¹³ = 202211191829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202211199974 and 202211200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202211200031) 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, 2351292981 + ... + 2351293066.

It is an arithmetic number, because the mean of its divisors is an integer number (51728446528).

Almost surely, 2^202211200021 is an apocalyptic number.

It is an amenable number.

202211200021 is a deficient number, since it is larger than the sum of its proper divisors (4702586091).

202211200021 is an equidigital number, since it uses as much as digits as its factorization.

202211200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4702586090.

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

Adding to 202211200021 its reverse (120002112202), we get a palindrome (322213312223).

The spelling of 202211200021 in words is "two hundred two billion, two hundred eleven million, two hundred thousand, twenty-one".