421200211321213 has 4 divisors (see below), whose sum is σ = 421488902351680. Its totient is φ = 420911520290748.

The previous prime is 421200211321163. The next prime is 421200211321223. The reversal of 421200211321213 is 312123112002124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421200211321213 - 2³³ = 421191621386621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421200211321223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144345513045 + ... + 144345515962.

It is an arithmetic number, because the mean of its divisors is an integer number (105372225587920).

Almost surely, 2^{421200211321213} is an apocalyptic number.

It is an amenable number.

421200211321213 is a deficient number, since it is larger than the sum of its proper divisors (288691030467).

421200211321213 is a wasteful number, since it uses less digits than its factorization.

421200211321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288691030466.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 421200211321213 its reverse (312123112002124), we get a palindrome (733323323323337).

The spelling of 421200211321213 in words is "four hundred twenty-one trillion, two hundred billion, two hundred eleven million, three hundred twenty-one thousand, two hundred thirteen".