210102202021 has 8 divisors (see below), whose sum is σ = 210429868160. Its totient is φ = 209774625552.

The previous prime is 210102202019. The next prime is 210102202031. The reversal of 210102202021 is 120202201012.

It is a happy number.

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 210102202021 - 2¹ = 210102202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210102201992 and 210102202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102202031) 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, 5840536 + ... + 5876398.

It is an arithmetic number, because the mean of its divisors is an integer number (26303733520).

Almost surely, 2^210102202021 is an apocalyptic number.

It is an amenable number.

210102202021 is a deficient number, since it is larger than the sum of its proper divisors (327666139).

210102202021 is an equidigital number, since it uses as much as digits as its factorization.

210102202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44835.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210102202021 its reverse (120202201012), we get a palindrome (330304403033).

The spelling of 210102202021 in words is "two hundred ten billion, one hundred two million, two hundred two thousand, twenty-one".