211222052231 has 4 divisors (see below), whose sum is σ = 211222974264. Its totient is φ = 211221130200.

The previous prime is 211222052221. The next prime is 211222052281. The reversal of 211222052231 is 132250222112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211222052231 - 2³⁴ = 194042183047 is a prime.

It is a super-2 number, since 2×211222052231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211222052197 and 211222052206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222052221) 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, 176141 + ... + 673401.

It is an arithmetic number, because the mean of its divisors is an integer number (52805743566).

Almost surely, 2^211222052231 is an apocalyptic number.

211222052231 is a deficient number, since it is larger than the sum of its proper divisors (922033).

211222052231 is an equidigital number, since it uses as much as digits as its factorization.

211222052231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922032.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 211222052231 its reverse (132250222112), we get a palindrome (343472274343).

The spelling of 211222052231 in words is "two hundred eleven billion, two hundred twenty-two million, fifty-two thousand, two hundred thirty-one".