2101211002209 has 32 divisors (see below), whose sum is σ = 3060014624640. Its totient is φ = 1271917209600.

The previous prime is 2101211002169. The next prime is 2101211002223. The reversal of 2101211002209 is 9022001121012.

It is not a de Polignac number, because 2101211002209 - 2¹² = 2101210998113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2101211002109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118295889 + ... + 118313649.

It is an arithmetic number, because the mean of its divisors is an integer number (95625457020).

Almost surely, 2^{2101211002209} is an apocalyptic number.

It is an amenable number.

2101211002209 is a deficient number, since it is larger than the sum of its proper divisors (958803622431).

2101211002209 is a wasteful number, since it uses less digits than its factorization.

2101211002209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21921.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 2101211002209 in words is "two trillion, one hundred one billion, two hundred eleven million, two thousand, two hundred nine".