20121002202102 has 16 divisors (see below), whose sum is σ = 40611197106480. Its totient is φ = 6645468616992.

The previous prime is 20121002202097. The next prime is 20121002202113. The reversal of 20121002202102 is 20120220012102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15383028553 + ... + 15383029860.

It is an arithmetic number, because the mean of its divisors is an integer number (2538199819155).

Almost surely, 2^{20121002202102} is an apocalyptic number.

20121002202102 is an abundant number, since it is smaller than the sum of its proper divisors (20490194904378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121002202102 is a wasteful number, since it uses less digits than its factorization.

20121002202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30766058527.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20121002202102 its reverse (20120220012102), we get a palindrome (40241222214204).

The spelling of 20121002202102 in words is "twenty trillion, one hundred twenty-one billion, two million, two hundred two thousand, one hundred two".