2012151445122 has 256 divisors, whose sum is σ = 5356472647680. Its totient is φ = 489071520000.

The previous prime is 2012151445099. The next prime is 2012151445127. The reversal of 2012151445122 is 2215441512102.

It is a self number, because there is not a number n which added to its sum of digits gives 2012151445122.

It is not an unprimeable number, because it can be changed into a prime (2012151445127) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 111957597 + ... + 111975567.

It is an arithmetic number, because the mean of its divisors is an integer number (20923721280).

Almost surely, 2^{2012151445122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012151445122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2678236323840).

2012151445122 is an abundant number, since it is smaller than the sum of its proper divisors (3344321202558).

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

2012151445122 is a wasteful number, since it uses less digits than its factorization.

2012151445122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18309.

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 2012151445122 its reverse (2215441512102), we get a palindrome (4227592957224).

The spelling of 2012151445122 in words is "two trillion, twelve billion, one hundred fifty-one million, four hundred forty-five thousand, one hundred twenty-two".