101000021021 has 8 divisors (see below), whose sum is σ = 101322761280. Its totient is φ = 100677463488.

The previous prime is 101000020993. The next prime is 101000021069. The reversal of 101000021021 is 120120000101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101000021021 - 2¹⁰ = 101000019997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101000021081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1107845 + ... + 1195541.

It is an arithmetic number, because the mean of its divisors is an integer number (12665345160).

Almost surely, 2^101000021021 is an apocalyptic number.

It is an amenable number.

101000021021 is a deficient number, since it is larger than the sum of its proper divisors (322740259).

101000021021 is an equidigital number, since it uses as much as digits as its factorization.

101000021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91363.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 101000021021 its reverse (120120000101), we get a palindrome (221120021122).

The spelling of 101000021021 in words is "one hundred one billion, twenty-one thousand, twenty-one".