2111210242440 has 64 divisors (see below), whose sum is σ = 6820833096000. Its totient is φ = 519682520832.

The previous prime is 2111210242439. The next prime is 2111210242487. The reversal of 2111210242440 is 442420121112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2111210242440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 676668390 + ... + 676671509.

It is an arithmetic number, because the mean of its divisors is an integer number (106575517125).

Almost surely, 2^{2111210242440} is an apocalyptic number.

2111210242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111210242440 is an abundant number, since it is smaller than the sum of its proper divisors (4709622853560).

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

2111210242440 is a wasteful number, since it uses less digits than its factorization.

2111210242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353339926 (or 1353339922 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 2111210242440 its reverse (442420121112), we get a palindrome (2553630363552).

The spelling of 2111210242440 in words is "two trillion, one hundred eleven billion, two hundred ten million, two hundred forty-two thousand, four hundred forty".