100421200057 has 2 divisors, whose sum is σ = 100421200058. Its totient is φ = 100421200056.

The previous prime is 100421200051. The next prime is 100421200111. The reversal of 100421200057 is 750002124001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95146954681 + 5274245376 = 308459^2 + 72624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100421200057 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421200051) 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, 50210600028 + 50210600029.

It is an arithmetic number, because the mean of its divisors is an integer number (50210600029).

Almost surely, 2^100421200057 is an apocalyptic number.

It is an amenable number.

100421200057 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421200057 is an equidigital number, since it uses as much as digits as its factorization.

100421200057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

Adding to 100421200057 its reverse (750002124001), we get a palindrome (850423324058).

The spelling of 100421200057 in words is "one hundred billion, four hundred twenty-one million, two hundred thousand, fifty-seven".