201210320421 has 24 divisors (see below), whose sum is σ = 317794389120. Its totient is φ = 121662686400.

The previous prime is 201210320401. The next prime is 201210320459. The reversal of 201210320421 is 124023012102.

It is a happy number.

201210320421 is a `hidden beast` number, since 2 + 0 + 1 + 210 + 32 + 0 + 421 = 666.

201210320421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201210320421 - 2²⁷ = 201076102693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201210320394 and 201210320403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210320401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2315136 + ... + 2400473.

It is an arithmetic number, because the mean of its divisors is an integer number (13241432880).

Almost surely, 2^201210320421 is an apocalyptic number.

It is an amenable number.

201210320421 is a deficient number, since it is larger than the sum of its proper divisors (116584068699).

201210320421 is a wasteful number, since it uses less digits than its factorization.

201210320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716057 (or 4716054 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201210320421 its reverse (124023012102), we get a palindrome (325233332523).

The spelling of 201210320421 in words is "two hundred one billion, two hundred ten million, three hundred twenty thousand, four hundred twenty-one".