210344443421 has 16 divisors (see below), whose sum is σ = 241472544768. Its totient is φ = 179486790000.

The previous prime is 210344443417. The next prime is 210344443427. The reversal of 210344443421 is 124344443012.

It is not a de Polignac number, because 210344443421 - 2² = 210344443417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210344443427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3595676 + ... + 3653706.

It is an arithmetic number, because the mean of its divisors is an integer number (15092034048).

Almost surely, 2^210344443421 is an apocalyptic number.

It is an amenable number.

210344443421 is a deficient number, since it is larger than the sum of its proper divisors (31128101347).

210344443421 is a wasteful number, since it uses less digits than its factorization.

210344443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60352.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 210344443421 its reverse (124344443012), we get a palindrome (334688886433).

The spelling of 210344443421 in words is "two hundred ten billion, three hundred forty-four million, four hundred forty-three thousand, four hundred twenty-one".