10001100100021 has 4 divisors (see below), whose sum is σ = 10017796428000. Its totient is φ = 9984403772044.

The previous prime is 10001100099997. The next prime is 10001100100067. The reversal of 10001100100021 is 12000100110001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10001100100021 - 2⁵ = 10001100099989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001100099977 and 10001100100013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001100100081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8348163091 + ... + 8348164288.

It is an arithmetic number, because the mean of its divisors is an integer number (2504449107000).

Almost surely, 2^{10001100100021} is an apocalyptic number.

It is an amenable number.

10001100100021 is a deficient number, since it is larger than the sum of its proper divisors (16696327979).

10001100100021 is an equidigital number, since it uses as much as digits as its factorization.

10001100100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16696327978.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10001100100021 its reverse (12000100110001), we get a palindrome (22001200210022).

The spelling of 10001100100021 in words is "ten trillion, one billion, one hundred million, one hundred thousand, twenty-one".