212222201121012 has 24 divisors (see below), whose sum is σ = 495241171631136. Its totient is φ = 70732728609568.

The previous prime is 212222201121011. The next prime is 212222201121017. The reversal of 212222201121012 is 210121102222212.

It is a self number, because there is not a number n which added to its sum of digits gives 212222201121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222201121011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000526718 + ... + 1000738805.

It is an arithmetic number, because the mean of its divisors is an integer number (20635048817964).

Almost surely, 2^{212222201121012} is an apocalyptic number.

It is an amenable number.

212222201121012 is an abundant number, since it is smaller than the sum of its proper divisors (283018970510124).

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

212222201121012 is a wasteful number, since it uses less digits than its factorization.

212222201121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001274367 (or 2001274365 counting only the distinct ones).

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

Adding to 212222201121012 its reverse (210121102222212), we get a palindrome (422343303343224).

The spelling of 212222201121012 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred one million, one hundred twenty-one thousand, twelve".