20002100121102 has 16 divisors (see below), whose sum is σ = 43640945718912. Its totient is φ = 6061242460920.

The previous prime is 20002100121083. The next prime is 20002100121109. The reversal of 20002100121102 is 20112100120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002100121109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151531061458 + ... + 151531061589.

It is an arithmetic number, because the mean of its divisors is an integer number (2727559107432).

Almost surely, 2^{20002100121102} is an apocalyptic number.

20002100121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20002100121102 is an abundant number, since it is smaller than the sum of its proper divisors (23638845597810).

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

20002100121102 is a wasteful number, since it uses less digits than its factorization.

20002100121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303062123063.

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

Adding to 20002100121102 its reverse (20112100120002), we get a palindrome (40114200241104).

The spelling of 20002100121102 in words is "twenty trillion, two billion, one hundred million, one hundred twenty-one thousand, one hundred two".