101211210210009 has 4 divisors (see below), whose sum is σ = 134948280280016. Its totient is φ = 67474140140004.

The previous prime is 101211210209929. The next prime is 101211210210029. The reversal of 101211210210009 is 900012012112101.

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 not a de Polignac number, because 101211210210009 - 2¹⁹ = 101211209685721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101211210210029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16868535034999 + ... + 16868535035004.

It is an arithmetic number, because the mean of its divisors is an integer number (33737070070004).

Almost surely, 2^{101211210210009} is an apocalyptic number.

It is an amenable number.

101211210210009 is a deficient number, since it is larger than the sum of its proper divisors (33737070070007).

101211210210009 is an equidigital number, since it uses as much as digits as its factorization.

101211210210009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33737070070006.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 101211210210009 in words is "one hundred one trillion, two hundred eleven billion, two hundred ten million, two hundred ten thousand, nine".