210243011421 has 8 divisors (see below), whose sum is σ = 280351380960. Its totient is φ = 140148324752.

The previous prime is 210243011411. The next prime is 210243011423. The reversal of 210243011421 is 124110342012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210243011421 - 2⁹ = 210243010909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243011423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3384810 + ... + 3446363.

It is an arithmetic number, because the mean of its divisors is an integer number (35043922620).

Almost surely, 2^210243011421 is an apocalyptic number.

It is an amenable number.

210243011421 is a deficient number, since it is larger than the sum of its proper divisors (70108369539).

210243011421 is a wasteful number, since it uses less digits than its factorization.

210243011421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841435.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 210243011421 its reverse (124110342012), we get a palindrome (334353353433).

The spelling of 210243011421 in words is "two hundred ten billion, two hundred forty-three million, eleven thousand, four hundred twenty-one".