210431242021 has 32 divisors (see below), whose sum is σ = 282576059136. Its totient is φ = 151338240000.

The previous prime is 210431242019. The next prime is 210431242031. The reversal of 210431242021 is 120242134012.

It is a cyclic number.

It is not a de Polignac number, because 210431242021 - 2¹ = 210431242019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210431241983 and 210431242001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210431242031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13927371 + ... + 13942471.

It is an arithmetic number, because the mean of its divisors is an integer number (8830501848).

Almost surely, 2^210431242021 is an apocalyptic number.

It is an amenable number.

210431242021 is a deficient number, since it is larger than the sum of its proper divisors (72144817115).

210431242021 is a wasteful number, since it uses less digits than its factorization.

210431242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29053.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 210431242021 its reverse (120242134012), we get a palindrome (330673376033).

The spelling of 210431242021 in words is "two hundred ten billion, four hundred thirty-one million, two hundred forty-two thousand, twenty-one".