2012440091 has 2 divisors, whose sum is σ = 2012440092. Its totient is φ = 2012440090.

The previous prime is 2012440063. The next prime is 2012440099. The reversal of 2012440091 is 1900442102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012440091 - 2²² = 2008245787 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012440099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006220045 + 1006220046.

It is an arithmetic number, because the mean of its divisors is an integer number (1006220046).

Almost surely, 2^2012440091 is an apocalyptic number.

2012440091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012440091 is an equidigital number, since it uses as much as digits as its factorization.

2012440091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2012440091 is about 44860.2283877378. The cubic root of 2012440091 is about 1262.5279078365.

Adding to 2012440091 its reverse (1900442102), we get a palindrome (3912882193).

The spelling of 2012440091 in words is "two billion, twelve million, four hundred forty thousand, ninety-one".