211243232242 has 16 divisors (see below), whose sum is σ = 362511268992. Its totient is φ = 90437810400.

The previous prime is 211243232209. The next prime is 211243232243. The reversal of 211243232242 is 242232342112.

It is a self number, because there is not a number n which added to its sum of digits gives 211243232242.

It is not an unprimeable number, because it can be changed into a prime (211243232243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7903134 + ... + 7929817.

It is an arithmetic number, because the mean of its divisors is an integer number (22656954312).

Almost surely, 2^211243232242 is an apocalyptic number.

211243232242 is a deficient number, since it is larger than the sum of its proper divisors (151268036750).

211243232242 is a wasteful number, since it uses less digits than its factorization.

211243232242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15833913.

The product of its digits is 9216, while the sum is 28.

Adding to 211243232242 its reverse (242232342112), we get a palindrome (453475574354).

The spelling of 211243232242 in words is "two hundred eleven billion, two hundred forty-three million, two hundred thirty-two thousand, two hundred forty-two".