100021120547 has 2 divisors, whose sum is σ = 100021120548. Its totient is φ = 100021120546.

The previous prime is 100021120513. The next prime is 100021120637. The reversal of 100021120547 is 745021120001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100021120547 - 2¹⁸ = 100020858403 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021123547) 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, 50010560273 + 50010560274.

It is an arithmetic number, because the mean of its divisors is an integer number (50010560274).

Almost surely, 2^100021120547 is an apocalyptic number.

100021120547 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021120547 is an equidigital number, since it uses as much as digits as its factorization.

100021120547 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 23.

Adding to 100021120547 its reverse (745021120001), we get a palindrome (845042240548).

The spelling of 100021120547 in words is "one hundred billion, twenty-one million, one hundred twenty thousand, five hundred forty-seven".