2101201111009 has 16 divisors (see below), whose sum is σ = 2821193101440. Its totient is φ = 1511353445760.

The previous prime is 2101201111007. The next prime is 2101201111039. The reversal of 2101201111009 is 9001111021012.

It is a cyclic number.

It is not a de Polignac number, because 2101201111009 - 2¹ = 2101201111007 is a prime.

It is a super-2 number, since 2×2101201111009² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101201111007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049550004 + ... + 1049552005.

It is an arithmetic number, because the mean of its divisors is an integer number (176324568840).

Almost surely, 2^{2101201111009} is an apocalyptic number.

It is an amenable number.

2101201111009 is a deficient number, since it is larger than the sum of its proper divisors (719991990431).

2101201111009 is a wasteful number, since it uses less digits than its factorization.

2101201111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099102040.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 2101201111009 in words is "two trillion, one hundred one billion, two hundred one million, one hundred eleven thousand, nine".