21441100231530 has 160 divisors (see below), whose sum is σ = 69764655856896. Its totient is φ = 4612539188736.

The previous prime is 21441100231493. The next prime is 21441100231543. The reversal of 21441100231530 is 3513200114412.

21441100231530 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 1 + 100 + 23 + 1 + 530 = 666.

It is a super-2 number, since 2×21441100231530² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21441100231494 and 21441100231503.

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 79 ways as a sum of consecutive naturals, for example, 111124174 + ... + 111316953.

Almost surely, 2^{21441100231530} is an apocalyptic number.

21441100231530 is an abundant number, since it is smaller than the sum of its proper divisors (48323555625366).

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

21441100231530 is a wasteful number, since it uses less digits than its factorization.

21441100231530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222441170 (or 222441161 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 21441100231530 its reverse (3513200114412), we get a palindrome (24954300345942).

The spelling of 21441100231530 in words is "twenty-one trillion, four hundred forty-one billion, one hundred million, two hundred thirty-one thousand, five hundred thirty".