20121021000212 has 24 divisors (see below), whose sum is σ = 38417335495392. Its totient is φ = 9144852631200.

The previous prime is 20121021000193. The next prime is 20121021000281. The reversal of 20121021000212 is 21200012012102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26268278 + ... + 27023405.

It is an arithmetic number, because the mean of its divisors is an integer number (1600722312308).

Almost surely, 2^{20121021000212} is an apocalyptic number.

20121021000212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20121021000212 is a deficient number, since it is larger than the sum of its proper divisors (18296314495180).

20121021000212 is a wasteful number, since it uses less digits than its factorization.

20121021000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53300279 (or 53300277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121021000212 its reverse (21200012012102), we get a palindrome (41321033012314).

The spelling of 20121021000212 in words is "twenty trillion, one hundred twenty-one billion, twenty-one million, two hundred twelve", and thus it is an aban number.