2011521245144 has 16 divisors (see below), whose sum is σ = 3863592636120. Its totient is φ = 981229875520.

The previous prime is 2011521245113. The next prime is 2011521245177. The reversal of 2011521245144 is 4415421251102.

It is a self number, because there is not a number n which added to its sum of digits gives 2011521245144.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3066343034 + ... + 3066343689.

Almost surely, 2^{2011521245144} is an apocalyptic number.

It is an amenable number.

2011521245144 is a deficient number, since it is larger than the sum of its proper divisors (1852071390976).

2011521245144 is a wasteful number, since it uses less digits than its factorization.

2011521245144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132686770 (or 6132686766 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

Adding to 2011521245144 its reverse (4415421251102), we get a palindrome (6426942496246).

The spelling of 2011521245144 in words is "two trillion, eleven billion, five hundred twenty-one million, two hundred forty-five thousand, one hundred forty-four".