2122012221012 has 36 divisors (see below), whose sum is σ = 5414105956896. Its totient is φ = 700726775760.

The previous prime is 2122012220921. The next prime is 2122012221031. The reversal of 2122012221012 is 2101222102212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2122012221012² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275439064 + ... + 275446767.

It is an arithmetic number, because the mean of its divisors is an integer number (150391832136).

Almost surely, 2^{2122012221012} is an apocalyptic number.

It is an amenable number.

2122012221012 is an abundant number, since it is smaller than the sum of its proper divisors (3292093735884).

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

2122012221012 is a wasteful number, since it uses less digits than its factorization.

2122012221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550885948 (or 550885943 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122012221012 its reverse (2101222102212), we get a palindrome (4223234323224).

The spelling of 2122012221012 in words is "two trillion, one hundred twenty-two billion, twelve million, two hundred twenty-one thousand, twelve".