3811274221205 has 16 divisors (see below), whose sum is σ = 5206230716544. Its totient is φ = 2651321196480.

The previous prime is 3811274221177. The next prime is 3811274221207. The reversal of 3811274221205 is 5021224721183.

It is not a de Polignac number, because 3811274221205 - 2¹⁰ = 3811274220181 is a prime.

It is a super-2 number, since 2×3811274221205² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811274221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1506431234 + ... + 1506433763.

It is an arithmetic number, because the mean of its divisors is an integer number (325389419784).

Almost surely, 2^{3811274221205} is an apocalyptic number.

It is an amenable number.

3811274221205 is a deficient number, since it is larger than the sum of its proper divisors (1394956495339).

3811274221205 is a wasteful number, since it uses less digits than its factorization.

3811274221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012865036.

The product of its (nonzero) digits is 53760, while the sum is 38.

Adding to 3811274221205 its reverse (5021224721183), we get a palindrome (8832498942388).

The spelling of 3811274221205 in words is "three trillion, eight hundred eleven billion, two hundred seventy-four million, two hundred twenty-one thousand, two hundred five".