12021211222122 has 8 divisors (see below), whose sum is σ = 24042422444256. Its totient is φ = 4007070407372.

The previous prime is 12021211222099. The next prime is 12021211222123. The reversal of 12021211222122 is 22122211212021.

It is a sphenic number, since it is the product of 3 distinct primes.

12021211222122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12021211222123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001767601838 + ... + 1001767601849.

It is an arithmetic number, because the mean of its divisors is an integer number (3005302805532).

Almost surely, 2^{12021211222122} is an apocalyptic number.

12021211222122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12021211222122 is a wasteful number, since it uses less digits than its factorization.

12021211222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003535203692.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12021211222122 its reverse (22122211212021), we get a palindrome (34143422434143).

The spelling of 12021211222122 in words is "twelve trillion, twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-two".