2012047091 has 2 divisors, whose sum is σ = 2012047092. Its totient is φ = 2012047090.

The previous prime is 2012047049. The next prime is 2012047117. The reversal of 2012047091 is 1907402102.

It is an a-pointer prime, because the next prime (2012047117) can be obtained adding 2012047091 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012047091 - 2⁶ = 2012047027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012047091.

It is not a weakly prime, because it can be changed into another prime (2012047001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006023545 + 1006023546.

It is an arithmetic number, because the mean of its divisors is an integer number (1006023546).

Almost surely, 2^2012047091 is an apocalyptic number.

2012047091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012047091 is an equidigital number, since it uses as much as digits as its factorization.

2012047091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2012047091 is about 44855.8479019180. The cubic root of 2012047091 is about 1262.4457180988.

Adding to 2012047091 its reverse (1907402102), we get a palindrome (3919449193).

The spelling of 2012047091 in words is "two billion, twelve million, forty-seven thousand, ninety-one".