211321044442 has 8 divisors (see below), whose sum is σ = 324353231136. Its totient is φ = 103203300732.

The previous prime is 211321044421. The next prime is 211321044449. The reversal of 211321044442 is 244440123112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211321044442.

It is not an unprimeable number, because it can be changed into a prime (211321044449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228610638 + ... + 1228610809.

It is an arithmetic number, because the mean of its divisors is an integer number (40544153892).

Almost surely, 2^211321044442 is an apocalyptic number.

211321044442 is a deficient number, since it is larger than the sum of its proper divisors (113032186694).

211321044442 is a wasteful number, since it uses less digits than its factorization.

211321044442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457221492.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 211321044442 its reverse (244440123112), we get a palindrome (455761167554).

The spelling of 211321044442 in words is "two hundred eleven billion, three hundred twenty-one million, forty-four thousand, four hundred forty-two".