211200220022021 has 8 divisors (see below), whose sum is σ = 227491962100224. Its totient is φ = 195500904928560.

The previous prime is 211200220021957. The next prime is 211200220022093. The reversal of 211200220022021 is 120220022002112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211200220022021 - 2⁶ = 211200220021957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211200220022321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148106745446 + ... + 148106746871.

It is an arithmetic number, because the mean of its divisors is an integer number (28436495262528).

Almost surely, 2^{211200220022021} is an apocalyptic number.

It is an amenable number.

211200220022021 is a deficient number, since it is larger than the sum of its proper divisors (16291742078203).

211200220022021 is a wasteful number, since it uses less digits than its factorization.

211200220022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296213492371.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211200220022021 its reverse (120220022002112), we get a palindrome (331420242024133).

The spelling of 211200220022021 in words is "two hundred eleven trillion, two hundred billion, two hundred twenty million, twenty-two thousand, twenty-one".