10011020020021 has 4 divisors (see below), whose sum is σ = 10011032997952. Its totient is φ = 10011007042092.

The previous prime is 10011020020009. The next prime is 10011020020033. The reversal of 10011020020021 is 12002002011001.

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 an interprime number because it is at equal distance from previous prime (10011020020009) and next prime (10011020020033).

It is a cyclic number.

It is not a de Polignac number, because 10011020020021 - 2⁵ = 10011020019989 is a prime.

It is a super-2 number, since 2×10011020020021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011020020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5253471 + ... + 6900796.

It is an arithmetic number, because the mean of its divisors is an integer number (2502758249488).

Almost surely, 2^{10011020020021} is an apocalyptic number.

It is an amenable number.

10011020020021 is a deficient number, since it is larger than the sum of its proper divisors (12977931).

10011020020021 is an equidigital number, since it uses as much as digits as its factorization.

10011020020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12977930.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10011020020021 its reverse (12002002011001), we get a palindrome (22013022031022).

The spelling of 10011020020021 in words is "ten trillion, eleven billion, twenty million, twenty thousand, twenty-one".