20213212222012 has 12 divisors (see below), whose sum is σ = 35377546956976. Its totient is φ = 10105341662880.

The previous prime is 20213212221997. The next prime is 20213212222043. The reversal of 20213212222012 is 21022221231202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316076064 + ... + 316140007.

Almost surely, 2^{20213212222012} is an apocalyptic number.

It is an amenable number.

20213212222012 is a deficient number, since it is larger than the sum of its proper divisors (15164334734964).

20213212222012 is a wasteful number, since it uses less digits than its factorization.

20213212222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632224068 (or 632224066 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20213212222012 its reverse (21022221231202), we get a palindrome (41235433453214).

The spelling of 20213212222012 in words is "twenty trillion, two hundred thirteen billion, two hundred twelve million, two hundred twenty-two thousand, twelve".