20120021100212 has 12 divisors (see below), whose sum is σ = 38410949373216. Its totient is φ = 9145464136440.

The previous prime is 20120021100169. The next prime is 20120021100229. The reversal of 20120021100212 is 21200112002102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228636603368 + ... + 228636603455.

It is an arithmetic number, because the mean of its divisors is an integer number (3200912447768).

Almost surely, 2^{20120021100212} is an apocalyptic number.

20120021100212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20120021100212 is a deficient number, since it is larger than the sum of its proper divisors (18290928273004).

20120021100212 is a wasteful number, since it uses less digits than its factorization.

20120021100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457273206838 (or 457273206836 counting only the distinct ones).

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

Adding to 20120021100212 its reverse (21200112002102), we get a palindrome (41320133102314).

The spelling of 20120021100212 in words is "twenty trillion, one hundred twenty billion, twenty-one million, one hundred thousand, two hundred twelve".