100021120513 has 2 divisors, whose sum is σ = 100021120514. Its totient is φ = 100021120512.

The previous prime is 100021120429. The next prime is 100021120547. The reversal of 100021120513 is 315021120001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78943017024 + 21078103489 = 280968^2 + 145183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021120513 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021124513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010560256 + 50010560257.

It is an arithmetic number, because the mean of its divisors is an integer number (50010560257).

Almost surely, 2^100021120513 is an apocalyptic number.

It is an amenable number.

100021120513 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021120513 is an equidigital number, since it uses as much as digits as its factorization.

100021120513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 100021120513 its reverse (315021120001), we get a palindrome (415042240514).

The spelling of 100021120513 in words is "one hundred billion, twenty-one million, one hundred twenty thousand, five hundred thirteen".