2220134681 has 2 divisors, whose sum is σ = 2220134682. Its totient is φ = 2220134680.

The previous prime is 2220134647. The next prime is 2220134689. The reversal of 2220134681 is 1864310222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2005248400 + 214886281 = 44780^2 + 14659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220134681 - 2¹⁸ = 2219872537 is a prime.

It is a super-2 number, since 2×2220134681² = 9857996003557943522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2220134689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110067340 + 1110067341.

It is an arithmetic number, because the mean of its divisors is an integer number (1110067341).

Almost surely, 2^2220134681 is an apocalyptic number.

It is an amenable number.

2220134681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220134681 is an equidigital number, since it uses as much as digits as its factorization.

2220134681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2220134681 is about 47118.3051583989. The cubic root of 2220134681 is about 1304.5471299914.

The spelling of 2220134681 in words is "two billion, two hundred twenty million, one hundred thirty-four thousand, six hundred eighty-one".