20100210121212 has 24 divisors (see below), whose sum is σ = 50508220304976. Its totient is φ = 6184680037248.

The previous prime is 20100210121193. The next prime is 20100210121247. The reversal of 20100210121212 is 21212101200102.

It is a junction number, because it is equal to n+sod(n) for n = 20100210121191 and 20100210121200.

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, 64423750233 + ... + 64423750544.

It is an arithmetic number, because the mean of its divisors is an integer number (2104509179374).

Almost surely, 2^{20100210121212} is an apocalyptic number.

It is an amenable number.

20100210121212 is an abundant number, since it is smaller than the sum of its proper divisors (30408010183764).

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

20100210121212 is a wasteful number, since it uses less digits than its factorization.

20100210121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128847500797 (or 128847500795 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20100210121212 its reverse (21212101200102), we get a palindrome (41312311321314).

The spelling of 20100210121212 in words is "twenty trillion, one hundred billion, two hundred ten million, one hundred twenty-one thousand, two hundred twelve".