211420342444 has 24 divisors (see below), whose sum is σ = 405258063840. Its totient is φ = 96061168896.

The previous prime is 211420342409. The next prime is 211420342451. The reversal of 211420342444 is 444243024112.

It is a happy number.

It is a super-2 number, since 2×211420342444² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 53603592 + ... + 53607535.

It is an arithmetic number, because the mean of its divisors is an integer number (16885752660).

Almost surely, 2^211420342444 is an apocalyptic number.

It is an amenable number.

211420342444 is a deficient number, since it is larger than the sum of its proper divisors (193837721396).

211420342444 is a wasteful number, since it uses less digits than its factorization.

211420342444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107211177 (or 107211175 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 211420342444 its reverse (444243024112), we get a palindrome (655663366556).

The spelling of 211420342444 in words is "two hundred eleven billion, four hundred twenty million, three hundred forty-two thousand, four hundred forty-four".