2100122012009 has 8 divisors (see below), whose sum is σ = 2400477404160. Its totient is φ = 1799851110336.

The previous prime is 2100122011993. The next prime is 2100122012011. The reversal of 2100122012009 is 9002102210012.

It is a happy number.

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 2100122012009 - 2⁴ = 2100122011993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100122012069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21069344 + ... + 21168785.

It is an arithmetic number, because the mean of its divisors is an integer number (300059675520).

Almost surely, 2^{2100122012009} is an apocalyptic number.

It is an amenable number.

2100122012009 is a deficient number, since it is larger than the sum of its proper divisors (300355392151).

2100122012009 is an equidigital number, since it uses as much as digits as its factorization.

2100122012009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42245239.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 2100122012009 in words is "two trillion, one hundred billion, one hundred twenty-two million, twelve thousand, nine".