2121411144412 has 72 divisors (see below), whose sum is σ = 4483405730160. Its totient is φ = 874700709120.

The previous prime is 2121411144407. The next prime is 2121411144421. The reversal of 2121411144412 is 2144411141212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933103 + ... + 2261305.

It is an arithmetic number, because the mean of its divisors is an integer number (62269524030).

Almost surely, 2^{2121411144412} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121411144412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241702865080).

2121411144412 is an abundant number, since it is smaller than the sum of its proper divisors (2361994585748).

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

2121411144412 is a wasteful number, since it uses less digits than its factorization.

2121411144412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328531 (or 1328522 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

Adding to 2121411144412 its reverse (2144411141212), we get a palindrome (4265822285624).

The spelling of 2121411144412 in words is "two trillion, one hundred twenty-one billion, four hundred eleven million, one hundred forty-four thousand, four hundred twelve".