20000011021 has 8 divisors (see below), whose sum is σ = 21054751200. Its totient is φ = 18945481680.

The previous prime is 20000011007. The next prime is 20000011033. The reversal of 20000011021 is 12011000002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000011021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000010995 and 20000011013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000011001) 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 in 7 ways as a sum of consecutive naturals, for example, 165135 + ... + 259363.

It is an arithmetic number, because the mean of its divisors is an integer number (2631843900).

Almost surely, 2^20000011021 is an apocalyptic number.

It is an amenable number.

20000011021 is a deficient number, since it is larger than the sum of its proper divisors (1054740179).

20000011021 is a wasteful number, since it uses less digits than its factorization.

20000011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105419.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20000011021 its reverse (12011000002), we get a palindrome (32011011023).

The spelling of 20000011021 in words is "twenty billion, eleven thousand, twenty-one".