2102010211009 has 4 divisors (see below), whose sum is σ = 2102017441216. Its totient is φ = 2102002980804.

The previous prime is 2102010210991. The next prime is 2102010211019. The reversal of 2102010211009 is 9001120102012.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2102010211009 - 2²⁹ = 2101473340097 is a prime.

It is a super-2 number, since 2×2102010211009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102010211019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3159909 + ... + 3766834.

It is an arithmetic number, because the mean of its divisors is an integer number (525504360304).

Almost surely, 2^{2102010211009} is an apocalyptic number.

It is an amenable number.

2102010211009 is a deficient number, since it is larger than the sum of its proper divisors (7230207).

2102010211009 is an equidigital number, since it uses as much as digits as its factorization.

2102010211009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7230206.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 2102010211009 in words is "two trillion, one hundred two billion, ten million, two hundred eleven thousand, nine".