2261100571209 has 48 divisors (see below), whose sum is σ = 3296264025600. Its totient is φ = 1493531094528.

The previous prime is 2261100571207. The next prime is 2261100571211. The reversal of 2261100571209 is 9021750011622.

2261100571209 is a `hidden beast` number, since 2 + 2 + 61 + 1 + 0 + 0 + 571 + 20 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (2261100571207) and next prime (2261100571211).

It is not a de Polignac number, because 2261100571209 - 2¹ = 2261100571207 is a prime.

It is a super-2 number, since 2×2261100571209² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261100571207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 373918024 + ... + 373924070.

It is an arithmetic number, because the mean of its divisors is an integer number (68672167200).

Almost surely, 2^{2261100571209} is an apocalyptic number.

It is an amenable number.

2261100571209 is a deficient number, since it is larger than the sum of its proper divisors (1035163454391).

2261100571209 is a wasteful number, since it uses less digits than its factorization.

2261100571209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134 (or 7131 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 2261100571209 in words is "two trillion, two hundred sixty-one billion, one hundred million, five hundred seventy-one thousand, two hundred nine".