12021112021122 has 48 divisors (see below), whose sum is σ = 26148555849312. Its totient is φ = 3991221688320.

The previous prime is 12021112021103. The next prime is 12021112021151. The reversal of 12021112021122 is 22112021112021.

12021112021122 is a `hidden beast` number, since 120 + 211 + 120 + 211 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12021112021095 and 12021112021104.

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 23 ways as a sum of consecutive naturals, for example, 96024093 + ... + 96149199.

It is an arithmetic number, because the mean of its divisors is an integer number (544761580194).

Almost surely, 2^{12021112021122} is an apocalyptic number.

12021112021122 is an abundant number, since it is smaller than the sum of its proper divisors (14127443828190).

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

12021112021122 is a wasteful number, since it uses less digits than its factorization.

12021112021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146143 (or 146140 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12021112021122 its reverse (22112021112021), we get a palindrome (34133133133143).

The spelling of 12021112021122 in words is "twelve trillion, twenty-one billion, one hundred twelve million, twenty-one thousand, one hundred twenty-two".