211223142043 has 4 divisors (see below), whose sum is σ = 212106921120. Its totient is φ = 210339362968.

The previous prime is 211223142041. The next prime is 211223142077. The reversal of 211223142043 is 340241322112.

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 211223142043 - 2¹ = 211223142041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211223141999 and 211223142017.

It is not an unprimeable number, because it can be changed into a prime (211223142041) 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, 441889180 + ... + 441889657.

It is an arithmetic number, because the mean of its divisors is an integer number (53026730280).

Almost surely, 2^211223142043 is an apocalyptic number.

211223142043 is a deficient number, since it is larger than the sum of its proper divisors (883779077).

211223142043 is an equidigital number, since it uses as much as digits as its factorization.

211223142043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883779076.

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

Adding to 211223142043 its reverse (340241322112), we get a palindrome (551464464155).

The spelling of 211223142043 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred forty-two thousand, forty-three".