2111321014440 has 128 divisors (see below), whose sum is σ = 7096528782720. Its totient is φ = 498001996800.

The previous prime is 2111321014427. The next prime is 2111321014441. The reversal of 2111321014440 is 444101231112.

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 2111321014440.

It is not an unprimeable number, because it can be changed into a prime (2111321014441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21565831 + ... + 21663510.

It is an arithmetic number, because the mean of its divisors is an integer number (55441631115).

Almost surely, 2^{2111321014440} is an apocalyptic number.

2111321014440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111321014440 is an abundant number, since it is smaller than the sum of its proper divisors (4985207768280).

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

2111321014440 is a wasteful number, since it uses less digits than its factorization.

2111321014440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43229403 (or 43229399 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2111321014440 its reverse (444101231112), we get a palindrome (2555422245552).

The spelling of 2111321014440 in words is "two trillion, one hundred eleven billion, three hundred twenty-one million, fourteen thousand, four hundred forty".