12121003057 has 2 divisors, whose sum is σ = 12121003058. Its totient is φ = 12121003056.

The previous prime is 12121003039. The next prime is 12121003073. The reversal of 12121003057 is 75030012121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11584432161 + 536570896 = 107631^2 + 23164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121003057 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121003157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060501528 + 6060501529.

It is an arithmetic number, because the mean of its divisors is an integer number (6060501529).

Almost surely, 2^12121003057 is an apocalyptic number.

It is an amenable number.

12121003057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121003057 is an equidigital number, since it uses as much as digits as its factorization.

12121003057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

Adding to 12121003057 its reverse (75030012121), we get a palindrome (87151015178).

The spelling of 12121003057 in words is "twelve billion, one hundred twenty-one million, three thousand, fifty-seven".