20130102210021 has 8 divisors (see below), whose sum is σ = 28418967825984. Its totient is φ = 12630652367040.

The previous prime is 20130102210013. The next prime is 20130102210041. The reversal of 20130102210021 is 12001220103102.

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

It is not a de Polignac number, because 20130102210021 - 2³ = 20130102210013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130102210041) 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, 197353943185 + ... + 197353943286.

It is an arithmetic number, because the mean of its divisors is an integer number (3552370978248).

Almost surely, 2^{20130102210021} is an apocalyptic number.

It is an amenable number.

20130102210021 is a deficient number, since it is larger than the sum of its proper divisors (8288865615963).

20130102210021 is a wasteful number, since it uses less digits than its factorization.

20130102210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394707886491.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20130102210021 its reverse (12001220103102), we get a palindrome (32131322313123).

The spelling of 20130102210021 in words is "twenty trillion, one hundred thirty billion, one hundred two million, two hundred ten thousand, twenty-one".