2011222987 has 2 divisors, whose sum is σ = 2011222988. Its totient is φ = 2011222986.

The previous prime is 2011222981. The next prime is 2011223021. The reversal of 2011222987 is 7892221102.

It is an a-pointer prime, because the next prime (2011223021) can be obtained adding 2011222987 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011222987 - 2¹⁹ = 2010698699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011222981) 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, 1005611493 + 1005611494.

It is an arithmetic number, because the mean of its divisors is an integer number (1005611494).

Almost surely, 2^2011222987 is an apocalyptic number.

2011222987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011222987 is an equidigital number, since it uses as much as digits as its factorization.

2011222987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 2011222987 is about 44846.6608232988. The cubic root of 2011222987 is about 1262.2733350160.

The spelling of 2011222987 in words is "two billion, eleven million, two hundred twenty-two thousand, nine hundred eighty-seven".