2151122343444 has 72 divisors (see below), whose sum is σ = 5503514889600. Its totient is φ = 708344727552.

The previous prime is 2151122343421. The next prime is 2151122343449. The reversal of 2151122343444 is 4443432211512.

2151122343444 is a `hidden beast` number, since 2 + 1 + 51 + 122 + 3 + 43 + 444 = 666.

It is a super-2 number, since 2×2151122343444² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2151122343399 and 2151122343408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151122343449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53910469 + ... + 53950355.

It is an arithmetic number, because the mean of its divisors is an integer number (76437706800).

Almost surely, 2^{2151122343444} is an apocalyptic number.

It is an amenable number.

2151122343444 is an abundant number, since it is smaller than the sum of its proper divisors (3352392546156).

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

2151122343444 is a wasteful number, since it uses less digits than its factorization.

2151122343444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58029 (or 58024 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

Adding to 2151122343444 its reverse (4443432211512), we get a palindrome (6594554554956).

The spelling of 2151122343444 in words is "two trillion, one hundred fifty-one billion, one hundred twenty-two million, three hundred forty-three thousand, four hundred forty-four".