20020012011021 has 64 divisors (see below), whose sum is σ = 31027199662080. Its totient is φ = 11363262704640.

The previous prime is 20020012010927. The next prime is 20020012011029. The reversal of 20020012011021 is 12011021002002.

It is not a de Polignac number, because 20020012011021 - 2⁷ = 20020012010893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020012010988 and 20020012011006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020012011029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6272050 + ... + 8909468.

It is an arithmetic number, because the mean of its divisors is an integer number (484799994720).

Almost surely, 2^{20020012011021} is an apocalyptic number.

It is an amenable number.

20020012011021 is a deficient number, since it is larger than the sum of its proper divisors (11007187651059).

20020012011021 is a wasteful number, since it uses less digits than its factorization.

20020012011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637666.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20020012011021 its reverse (12011021002002), we get a palindrome (32031033013023).

It can be divided in two parts, 200200 and 12011021, that added together give a palindrome (12211221).

The spelling of 20020012011021 in words is "twenty trillion, twenty billion, twelve million, eleven thousand, twenty-one".