211422214321 has 4 divisors (see below), whose sum is σ = 211549043952. Its totient is φ = 211295384692.

The previous prime is 211422214313. The next prime is 211422214391. The reversal of 211422214321 is 123412224112.

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 211422214321 - 2³ = 211422214313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211422214391) 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, 63412315 + ... + 63415648.

It is an arithmetic number, because the mean of its divisors is an integer number (52887260988).

Almost surely, 2^211422214321 is an apocalyptic number.

It is an amenable number.

211422214321 is a deficient number, since it is larger than the sum of its proper divisors (126829631).

211422214321 is a wasteful number, since it uses less digits than its factorization.

211422214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126829630.

The product of its digits is 1536, while the sum is 25.

Adding to 211422214321 its reverse (123412224112), we get a palindrome (334834438433).

The spelling of 211422214321 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred fourteen thousand, three hundred twenty-one".