1222102122012 has 96 divisors (see below), whose sum is σ = 3228680347200. Its totient is φ = 399621021696.

The previous prime is 1222102122011. The next prime is 1222102122029. The reversal of 1222102122012 is 2102212012221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222102122011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53662564 + ... + 53685332.

It is an arithmetic number, because the mean of its divisors is an integer number (33632086950).

Almost surely, 2^{1222102122012} is an apocalyptic number.

1222102122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222102122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614340173600).

1222102122012 is an abundant number, since it is smaller than the sum of its proper divisors (2006578225188).

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

1222102122012 is a wasteful number, since it uses less digits than its factorization.

1222102122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32212 (or 32204 counting only the distinct ones).

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

Adding to 1222102122012 its reverse (2102212012221), we get a palindrome (3324314134233).

The spelling of 1222102122012 in words is "one trillion, two hundred twenty-two billion, one hundred two million, one hundred twenty-two thousand, twelve".