213444220424 has 32 divisors (see below), whose sum is σ = 410118145920. Its totient is φ = 104094883776.

The previous prime is 213444220417. The next prime is 213444220439. The reversal of 213444220424 is 424022444312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858554 + ... + 1078889.

It is an arithmetic number, because the mean of its divisors is an integer number (12816192060).

Almost surely, 2^213444220424 is an apocalyptic number.

It is an amenable number.

213444220424 is a deficient number, since it is larger than the sum of its proper divisors (196673925496).

213444220424 is a wasteful number, since it uses less digits than its factorization.

213444220424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937789 (or 1937785 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 213444220424 its reverse (424022444312), we get a palindrome (637466664736).

The spelling of 213444220424 in words is "two hundred thirteen billion, four hundred forty-four million, two hundred twenty thousand, four hundred twenty-four".