20121301259 has 2 divisors, whose sum is σ = 20121301260. Its totient is φ = 20121301258.

The previous prime is 20121301253. The next prime is 20121301309. The reversal of 20121301259 is 95210312102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121301259 - 2¹⁶ = 20121235723 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121301253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060650629 + 10060650630.

It is an arithmetic number, because the mean of its divisors is an integer number (10060650630).

Almost surely, 2^20121301259 is an apocalyptic number.

20121301259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121301259 is an equidigital number, since it uses as much as digits as its factorization.

20121301259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 20121301259 in words is "twenty billion, one hundred twenty-one million, three hundred one thousand, two hundred fifty-nine".