2013121087 has 2 divisors, whose sum is σ = 2013121088. Its totient is φ = 2013121086.

The previous prime is 2013121081. The next prime is 2013121111. The reversal of 2013121087 is 7801213102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013121087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2013121081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006560543 + 1006560544.

It is an arithmetic number, because the mean of its divisors is an integer number (1006560544).

Almost surely, 2^2013121087 is an apocalyptic number.

2013121087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013121087 is an equidigital number, since it uses as much as digits as its factorization.

2013121087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2013121087 is about 44867.8179433767. The cubic root of 2013121087 is about 1262.6703020534.

Adding to 2013121087 its reverse (7801213102), we get a palindrome (9814334189).

The spelling of 2013121087 in words is "two billion, thirteen million, one hundred twenty-one thousand, eighty-seven".