2112261517 has 2 divisors, whose sum is σ = 2112261518. Its totient is φ = 2112261516.

The previous prime is 2112261499. The next prime is 2112261607. The reversal of 2112261517 is 7151622112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2111770116 + 491401 = 45954^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112261517 - 2¹⁵ = 2112228749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112261317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056130758 + 1056130759.

It is an arithmetic number, because the mean of its divisors is an integer number (1056130759).

Almost surely, 2^2112261517 is an apocalyptic number.

It is an amenable number.

2112261517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112261517 is an equidigital number, since it uses as much as digits as its factorization.

2112261517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 28.

The square root of 2112261517 is about 45959.3463508784. The cubic root of 2112261517 is about 1283.0666859210.

Adding to 2112261517 its reverse (7151622112), we get a palindrome (9263883629).

The spelling of 2112261517 in words is "two billion, one hundred twelve million, two hundred sixty-one thousand, five hundred seventeen".