20012212212212 has 144 divisors (see below), whose sum is σ = 40625130061824. Its totient is φ = 8606524449600.

The previous prime is 20012212212149. The next prime is 20012212212241. The reversal of 20012212212212 is 21221221221002.

It is a super-2 number, since 2×20012212212212² (a number of 27 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 681902123 + ... + 681931469.

Almost surely, 2^{20012212212212} is an apocalyptic number.

20012212212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20012212212212 is an abundant number, since it is smaller than the sum of its proper divisors (20612917849612).

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

20012212212212 is a wasteful number, since it uses less digits than its factorization.

20012212212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30418 (or 30405 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20012212212212 its reverse (21221221221002), we get a palindrome (41233433433214).

The spelling of 20012212212212 in words is "twenty trillion, twelve billion, two hundred twelve million, two hundred twelve thousand, two hundred twelve".