2012215109 has 2 divisors, whose sum is σ = 2012215110. Its totient is φ = 2012215108.

The previous prime is 2012215103. The next prime is 2012215123. The reversal of 2012215109 is 9015122102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1816634884 + 195580225 = 42622^2 + 13985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012215109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012215103) 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, 1006107554 + 1006107555.

It is an arithmetic number, because the mean of its divisors is an integer number (1006107555).

Almost surely, 2^2012215109 is an apocalyptic number.

It is an amenable number.

2012215109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012215109 is an equidigital number, since it uses as much as digits as its factorization.

2012215109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 2012215109 is about 44857.7207289893. The cubic root of 2012215109 is about 1262.4808577171.

The spelling of 2012215109 in words is "two billion, twelve million, two hundred fifteen thousand, one hundred nine".