20020012101021 has 8 divisors (see below), whose sum is σ = 26693394011680. Its totient is φ = 13346652462192.

The previous prime is 20020012101013. The next prime is 20020012101077. The reversal of 20020012101021 is 12010121002002.

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

It is not a de Polignac number, because 20020012101021 - 2³ = 20020012101013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20020012100988 and 20020012101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020012151021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3343591 + ... + 7156788.

It is an arithmetic number, because the mean of its divisors is an integer number (3336674251460).

Almost surely, 2^{20020012101021} is an apocalyptic number.

It is an amenable number.

20020012101021 is a deficient number, since it is larger than the sum of its proper divisors (6673381910659).

20020012101021 is a wasteful number, since it uses less digits than its factorization.

20020012101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11135915.

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

Adding to 20020012101021 its reverse (12010121002002), we get a palindrome (32030133103023).

The spelling of 20020012101021 in words is "twenty trillion, twenty billion, twelve million, one hundred one thousand, twenty-one".