101211213209 has 8 divisors (see below), whose sum is σ = 107243232768. Its totient is φ = 95187906880.

The previous prime is 101211213203. The next prime is 101211213283. The reversal of 101211213209 is 902312112101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-101211213209 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 (101211213203) 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, 2154377 + ... + 2200854.

It is an arithmetic number, because the mean of its divisors is an integer number (13405404096).

Almost surely, 2^101211213209 is an apocalyptic number.

It is an amenable number.

101211213209 is a deficient number, since it is larger than the sum of its proper divisors (6032019559).

101211213209 is a wasteful number, since it uses less digits than its factorization.

101211213209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356615.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 101211213209 in words is "one hundred one billion, two hundred eleven million, two hundred thirteen thousand, two hundred nine".