211444220442 has 32 divisors (see below), whose sum is σ = 520478082432. Its totient is φ = 55765508544.

The previous prime is 211444220431. The next prime is 211444220467. The reversal of 211444220442 is 244022444112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193629693 + ... + 193630784.

It is an arithmetic number, because the mean of its divisors is an integer number (16264940076).

Almost surely, 2^211444220442 is an apocalyptic number.

211444220442 is an abundant number, since it is smaller than the sum of its proper divisors (309033861990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211444220442 is a wasteful number, since it uses less digits than its factorization.

211444220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387260502.

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 211444220442 its reverse (244022444112), we get a palindrome (455466664554).

The spelling of 211444220442 in words is "two hundred eleven billion, four hundred forty-four million, two hundred twenty thousand, four hundred forty-two".