212100100211109 has 64 divisors (see below), whose sum is σ = 311646921062400. Its totient is φ = 127240537132800.

The previous prime is 212100100211099. The next prime is 212100100211239. The reversal of 212100100211109 is 901112001001212.

It is not a de Polignac number, because 212100100211109 - 2¹³ = 212100100202917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100100215109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26207842267 + ... + 26207850359.

It is an arithmetic number, because the mean of its divisors is an integer number (4869483141600).

Almost surely, 2^{212100100211109} is an apocalyptic number.

It is an amenable number.

212100100211109 is a deficient number, since it is larger than the sum of its proper divisors (99546820851291).

212100100211109 is a wasteful number, since it uses less digits than its factorization.

212100100211109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14506.

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

The spelling of 212100100211109 in words is "two hundred twelve trillion, one hundred billion, one hundred million, two hundred eleven thousand, one hundred nine".