20002121202102 has 24 divisors (see below), whose sum is σ = 43318203315624. Its totient is φ = 6154498831104.

The previous prime is 20002121202071. The next prime is 20002121202121. The reversal of 20002121202102 is 20120212120002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9862977883 + ... + 9862979910.

It is an arithmetic number, because the mean of its divisors is an integer number (1804925138151).

Almost surely, 2^{20002121202102} is an apocalyptic number.

20002121202102 is an abundant number, since it is smaller than the sum of its proper divisors (23316082113522).

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

20002121202102 is a wasteful number, since it uses less digits than its factorization.

20002121202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19725957824 (or 19725957811 counting only the distinct ones).

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

Adding to 20002121202102 its reverse (20120212120002), we get a palindrome (40122333322104).

The spelling of 20002121202102 in words is "twenty trillion, two billion, one hundred twenty-one million, two hundred two thousand, one hundred two".