212443022111431 has 4 divisors (see below), whose sum is σ = 212465576853000. Its totient is φ = 212420467369864.

The previous prime is 212443022111321. The next prime is 212443022111443. The reversal of 212443022111431 is 134111220344212.

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 212443022111431 - 2⁹ = 212443022110919 is a prime.

It is a super-2 number, since 2×212443022111431² (a number of 29 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 = 212443022111393 and 212443022111402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212443022121431) 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, 11277356656 + ... + 11277375493.

It is an arithmetic number, because the mean of its divisors is an integer number (53116394213250).

Almost surely, 2^{212443022111431} is an apocalyptic number.

212443022111431 is a deficient number, since it is larger than the sum of its proper divisors (22554741569).

212443022111431 is an equidigital number, since it uses as much as digits as its factorization.

212443022111431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22554741568.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 212443022111431 its reverse (134111220344212), we get a palindrome (346554242455643).

The spelling of 212443022111431 in words is "two hundred twelve trillion, four hundred forty-three billion, twenty-two million, one hundred eleven thousand, four hundred thirty-one".