121331200057 has 2 divisors, whose sum is σ = 121331200058. Its totient is φ = 121331200056.

The previous prime is 121331200037. The next prime is 121331200061. The reversal of 121331200057 is 750002133121.

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., 121246025616 + 85174441 = 348204^2 + 9229^2 .

It is a cyclic number.

It is not a de Polignac number, because 121331200057 - 2¹⁹ = 121330675769 is a prime.

It is not a weakly prime, because it can be changed into another prime (121331200037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665600028 + 60665600029.

It is an arithmetic number, because the mean of its divisors is an integer number (60665600029).

Almost surely, 2^121331200057 is an apocalyptic number.

It is an amenable number.

121331200057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121331200057 is an equidigital number, since it uses as much as digits as its factorization.

121331200057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 121331200057 its reverse (750002133121), we get a palindrome (871333333178).

The spelling of 121331200057 in words is "one hundred twenty-one billion, three hundred thirty-one million, two hundred thousand, fifty-seven".