20100021131212 has 48 divisors (see below), whose sum is σ = 39138162142464. Its totient is φ = 8955624104000.

The previous prime is 20100021131207. The next prime is 20100021131293. The reversal of 20100021131212 is 21213112000102.

20100021131212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18055114 + ... + 19136017.

It is an arithmetic number, because the mean of its divisors is an integer number (815378377968).

Almost surely, 2^{20100021131212} is an apocalyptic number.

20100021131212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20100021131212 is a deficient number, since it is larger than the sum of its proper divisors (19038141011252).

20100021131212 is a wasteful number, since it uses less digits than its factorization.

20100021131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37191390 (or 37191388 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20100021131212 its reverse (21213112000102), we get a palindrome (41313133131314).

The spelling of 20100021131212 in words is "twenty trillion, one hundred billion, twenty-one million, one hundred thirty-one thousand, two hundred twelve".