101210203021 has 8 divisors (see below), whose sum is σ = 101772908280. Its totient is φ = 100647892992.

The previous prime is 101210203009. The next prime is 101210203027. The reversal of 101210203021 is 120302012101.

It can be written as a sum of positive squares in 4 ways, for example, as 6687396 + 101203515625 = 2586^2 + 318125^2 .

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 101210203021 - 2²⁷ = 101075985293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210202992 and 101210203010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210203027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422385 + ... + 617113.

It is an arithmetic number, because the mean of its divisors is an integer number (12721613535).

Almost surely, 2^101210203021 is an apocalyptic number.

It is an amenable number.

101210203021 is a deficient number, since it is larger than the sum of its proper divisors (562705259).

101210203021 is a wasteful number, since it uses less digits than its factorization.

101210203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197615.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 101210203021 its reverse (120302012101), we get a palindrome (221512215122).

The spelling of 101210203021 in words is "one hundred one billion, two hundred ten million, two hundred three thousand, twenty-one".