2212322581 has 16 divisors (see below), whose sum is σ = 2539708416. Its totient is φ = 1887796656.

The previous prime is 2212322561. The next prime is 2212322603. The reversal of 2212322581 is 1852232122.

It is a cyclic number.

It is not a de Polignac number, because 2212322581 - 2²⁹ = 1675451669 is a prime.

It is a super-2 number, since 2×2212322581² = 9788742404805003122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212322561) 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, 2493720 + ... + 2494606.

It is an arithmetic number, because the mean of its divisors is an integer number (158731776).

Almost surely, 2^2212322581 is an apocalyptic number.

It is an amenable number.

2212322581 is a deficient number, since it is larger than the sum of its proper divisors (327385835).

2212322581 is an equidigital number, since it uses as much as digits as its factorization.

2212322581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its digits is 3840, while the sum is 28.

The square root of 2212322581 is about 47035.3333250653. Note that the first 4 decimals coincide. The cubic root of 2212322581 is about 1303.0152064801.

The spelling of 2212322581 in words is "two billion, two hundred twelve million, three hundred twenty-two thousand, five hundred eighty-one".