12021012122212 has 12 divisors (see below), whose sum is σ = 21041913450096. Its totient is φ = 6009036850760.

The previous prime is 12021012122191. The next prime is 12021012122243. The reversal of 12021012122212 is 21222121012021.

It is a self number, because there is not a number n which added to its sum of digits gives 12021012122212.

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, 367284178 + ... + 367316905.

It is an arithmetic number, because the mean of its divisors is an integer number (1753492787508).

Almost surely, 2^{12021012122212} is an apocalyptic number.

It is an amenable number.

12021012122212 is a deficient number, since it is larger than the sum of its proper divisors (9020901327884).

12021012122212 is a wasteful number, since it uses less digits than its factorization.

12021012122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734605178 (or 734605176 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12021012122212 its reverse (21222121012021), we get a palindrome (33243133134233).

The spelling of 12021012122212 in words is "twelve trillion, twenty-one billion, twelve million, one hundred twenty-two thousand, two hundred twelve".