21044241030340 has 48 divisors (see below), whose sum is σ = 48218685729984. Its totient is φ = 7651142928000.

The previous prime is 21044241030331. The next prime is 21044241030343. The reversal of 21044241030340 is 4303014244012.

It is a junction number, because it is equal to n+sod(n) for n = 21044241030299 and 21044241030308.

It is not an unprimeable number, because it can be changed into a prime (21044241030343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6887079 + ... + 9461518.

It is an arithmetic number, because the mean of its divisors is an integer number (1004555952708).

Almost surely, 2^{21044241030340} is an apocalyptic number.

21044241030340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21044241030340 is an abundant number, since it is smaller than the sum of its proper divisors (27174444699644).

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

21044241030340 is a wasteful number, since it uses less digits than its factorization.

21044241030340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16354468 (or 16354466 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21044241030340 its reverse (4303014244012), we get a palindrome (25347255274352).

The spelling of 21044241030340 in words is "twenty-one trillion, forty-four billion, two hundred forty-one million, thirty thousand, three hundred forty".