2112229649 has 2 divisors, whose sum is σ = 2112229650. Its totient is φ = 2112229648.

The previous prime is 2112229621. The next prime is 2112229661. The reversal of 2112229649 is 9469222112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1271635600 + 840594049 = 35660^2 + 28993^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112229649 - 2¹² = 2112225553 is a prime.

It is a super-2 number, since 2×2112229649² = 8923028180229326402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2112222649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056114824 + 1056114825.

It is an arithmetic number, because the mean of its divisors is an integer number (1056114825).

Almost surely, 2^2112229649 is an apocalyptic number.

It is an amenable number.

2112229649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112229649 is an equidigital number, since it uses as much as digits as its factorization.

2112229649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 2112229649 is about 45958.9996518636. Note that the first 3 decimals coincide. The cubic root of 2112229649 is about 1283.0602332833.

The spelling of 2112229649 in words is "two billion, one hundred twelve million, two hundred twenty-nine thousand, six hundred forty-nine".