100021000121212 has 12 divisors (see below), whose sum is σ = 175036938783616. Its totient is φ = 50010446183040.

The previous prime is 100021000121173. The next prime is 100021000121213. The reversal of 100021000121212 is 212121000120001.

It is a junction number, because it is equal to n+sod(n) for n = 100021000121192 and 100021000121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021000121213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9137589 + ... + 16838572.

Almost surely, 2^{100021000121212} is an apocalyptic number.

It is an amenable number.

100021000121212 is a deficient number, since it is larger than the sum of its proper divisors (75015938662404).

100021000121212 is a wasteful number, since it uses less digits than its factorization.

100021000121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26938788 (or 26938786 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100021000121212 its reverse (212121000120001), we get a palindrome (312142000241213).

The spelling of 100021000121212 in words is "one hundred trillion, twenty-one billion, one hundred twenty-one thousand, two hundred twelve".