20121130541 has 2 divisors, whose sum is σ = 20121130542. Its totient is φ = 20121130540.

The previous prime is 20121130531. The next prime is 20121130553. The reversal of 20121130541 is 14503112102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10429515625 + 9691614916 = 102125^2 + 98446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121130541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121130531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060565270 + 10060565271.

It is an arithmetic number, because the mean of its divisors is an integer number (10060565271).

Almost surely, 2^20121130541 is an apocalyptic number.

It is an amenable number.

20121130541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121130541 is an equidigital number, since it uses as much as digits as its factorization.

20121130541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 20121130541 its reverse (14503112102), we get a palindrome (34624242643).

The spelling of 20121130541 in words is "twenty billion, one hundred twenty-one million, one hundred thirty thousand, five hundred forty-one".