212212432231 has 4 divisors (see below), whose sum is σ = 212214128272. Its totient is φ = 212210736192.

The previous prime is 212212432207. The next prime is 212212432253. The reversal of 212212432231 is 132234212212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212212432231 - 2²⁷ = 212078214503 is a prime.

It is a super-2 number, since 2×212212432231² (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 = 212212432196 and 212212432205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212402231) 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, 643971 + ... + 916036.

It is an arithmetic number, because the mean of its divisors is an integer number (53053532068).

Almost surely, 2^212212432231 is an apocalyptic number.

212212432231 is a deficient number, since it is larger than the sum of its proper divisors (1696041).

212212432231 is a wasteful number, since it uses less digits than its factorization.

212212432231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696040.

The product of its digits is 2304, while the sum is 25.

Adding to 212212432231 its reverse (132234212212), we get a palindrome (344446644443).

The spelling of 212212432231 in words is "two hundred twelve billion, two hundred twelve million, four hundred thirty-two thousand, two hundred thirty-one".