2213771681 has 16 divisors (see below), whose sum is σ = 2590107840. Its totient is φ = 1870614720.

The previous prime is 2213771669. The next prime is 2213771713. The reversal of 2213771681 is 1861773122.

It is a cyclic number.

It is not a de Polignac number, because 2213771681 - 2⁶ = 2213771617 is a prime.

It is a super-2 number, since 2×2213771681² = 9801570111195131522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2213771611) 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 15 ways as a sum of consecutive naturals, for example, 88850 + ... + 111003.

It is an arithmetic number, because the mean of its divisors is an integer number (161881740).

Almost surely, 2^2213771681 is an apocalyptic number.

It is an amenable number.

2213771681 is a deficient number, since it is larger than the sum of its proper divisors (376336159).

2213771681 is a wasteful number, since it uses less digits than its factorization.

2213771681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199936.

The product of its digits is 28224, while the sum is 38.

The square root of 2213771681 is about 47050.7351802286. The cubic root of 2213771681 is about 1303.2996416760.

The spelling of 2213771681 in words is "two billion, two hundred thirteen million, seven hundred seventy-one thousand, six hundred eighty-one".