210120332021 has 8 divisors (see below), whose sum is σ = 210312876600. Its totient is φ = 209927878848.

The previous prime is 210120331999. The next prime is 210120332069. The reversal of 210120332021 is 120233021012.

It can be written as a sum of positive squares in 4 ways, for example, as 7070959921 + 203049372100 = 84089^2 + 450610^2 .

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 210120332021 - 2³⁴ = 192940462837 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 (213120332021) 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, 5085755 + ... + 5126903.

It is an arithmetic number, because the mean of its divisors is an integer number (26289109575).

Almost surely, 2^210120332021 is an apocalyptic number.

It is an amenable number.

210120332021 is a deficient number, since it is larger than the sum of its proper divisors (192544579).

210120332021 is a wasteful number, since it uses less digits than its factorization.

210120332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45703.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210120332021 its reverse (120233021012), we get a palindrome (330353353033).

The spelling of 210120332021 in words is "two hundred ten billion, one hundred twenty million, three hundred thirty-two thousand, twenty-one".