10001101100021 has 2 divisors, whose sum is σ = 10001101100022. Its totient is φ = 10001101100020.

The previous prime is 10001101099987. The next prime is 10001101100173. The reversal of 10001101100021 is 12000110110001.

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., 9494101562500 + 506999537521 = 3081250^2 + 712039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001101100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10001101099981 and 10001101100008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001101100821) 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, 5000550550010 + 5000550550011.

It is an arithmetic number, because the mean of its divisors is an integer number (5000550550011).

Almost surely, 2^{10001101100021} is an apocalyptic number.

It is an amenable number.

10001101100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001101100021 is an equidigital number, since it uses as much as digits as its factorization.

10001101100021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10001101100021 its reverse (12000110110001), we get a palindrome (22001211210022).

The spelling of 10001101100021 in words is "ten trillion, one billion, one hundred one million, one hundred thousand, twenty-one".