2122221102012 has 144 divisors (see below), whose sum is σ = 6051098403840. Its totient is φ = 642737319840.

The previous prime is 2122221101999. The next prime is 2122221102017. The reversal of 2122221102012 is 2102011222212.

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 (2122221102017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23778423 + ... + 23867505.

Almost surely, 2^{2122221102012} is an apocalyptic number.

2122221102012 is a gapful number since it is divisible by the number (22) 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 2122221102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3025549201920).

2122221102012 is an abundant number, since it is smaller than the sum of its proper divisors (3928877301828).

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

2122221102012 is a wasteful number, since it uses less digits than its factorization.

2122221102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90941 (or 90922 counting only the distinct ones).

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

Adding to 2122221102012 its reverse (2102011222212), we get a palindrome (4224232324224).

The spelling of 2122221102012 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, twelve".