20121308941 has 2 divisors, whose sum is σ = 20121308942. Its totient is φ = 20121308940.

The previous prime is 20121308899. The next prime is 20121308971. The reversal of 20121308941 is 14980312102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14998900900 + 5122408041 = 122470^2 + 71571^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121308941 - 2⁷ = 20121308813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121308971) 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, 10060654470 + 10060654471.

It is an arithmetic number, because the mean of its divisors is an integer number (10060654471).

Almost surely, 2^20121308941 is an apocalyptic number.

It is an amenable number.

20121308941 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121308941 is an equidigital number, since it uses as much as digits as its factorization.

20121308941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 20121308941 in words is "twenty billion, one hundred twenty-one million, three hundred eight thousand, nine hundred forty-one".