211422211021 has 8 divisors (see below), whose sum is σ = 242851910400. Its totient is φ = 180299143248.

The previous prime is 211422211019. The next prime is 211422211087. The reversal of 211422211021 is 120112224112.

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

It is not a de Polignac number, because 211422211021 - 2¹ = 211422211019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211422211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211422611021) 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, 76656421 + ... + 76659178.

It is an arithmetic number, because the mean of its divisors is an integer number (30356488800).

Almost surely, 2^211422211021 is an apocalyptic number.

It is an amenable number.

211422211021 is a deficient number, since it is larger than the sum of its proper divisors (31429699379).

211422211021 is a wasteful number, since it uses less digits than its factorization.

211422211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153315803.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211422211021 its reverse (120112224112), we get a palindrome (331534435133).

The spelling of 211422211021 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred eleven thousand, twenty-one".