2113444444420 has 12 divisors (see below), whose sum is σ = 4438233333324. Its totient is φ = 845377777760.

The previous prime is 2113444444387. The next prime is 2113444444439. The reversal of 2113444444420 is 244444443112.

It can be written as a sum of positive squares in 2 ways, for example, as 309349540864 + 1804094903556 = 556192^2 + 1343166^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2113444444420.

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, 52836111091 + ... + 52836111130.

It is an arithmetic number, because the mean of its divisors is an integer number (369852777777).

Almost surely, 2^{2113444444420} is an apocalyptic number.

2113444444420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2113444444420 is an abundant number, since it is smaller than the sum of its proper divisors (2324788888904).

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

2113444444420 is a wasteful number, since it uses less digits than its factorization.

2113444444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105672222230 (or 105672222228 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 2113444444420 its reverse (244444443112), we get a palindrome (2357888887532).

The spelling of 2113444444420 in words is "two trillion, one hundred thirteen billion, four hundred forty-four million, four hundred forty-four thousand, four hundred twenty".