10021210109 has 4 divisors (see below), whose sum is σ = 10548642240. Its totient is φ = 9493777980.

The previous prime is 10021210057. The next prime is 10021210151. The reversal of 10021210109 is 90101212001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021210109 - 2⁸ = 10021209853 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 (10021210169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263716037 + ... + 263716074.

It is an arithmetic number, because the mean of its divisors is an integer number (2637160560).

Almost surely, 2^10021210109 is an apocalyptic number.

10021210109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10021210109 is a deficient number, since it is larger than the sum of its proper divisors (527432131).

10021210109 is an equidigital number, since it uses as much as digits as its factorization.

10021210109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527432130.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 10021210109 in words is "ten billion, twenty-one million, two hundred ten thousand, one hundred nine".