21441411312 has 40 divisors (see below), whose sum is σ = 55605871056. Its totient is φ = 7119323136.

The previous prime is 21441411307. The next prime is 21441411323. The reversal of 21441411312 is 21311414412.

It is a happy number.

It is a super-2 number, since 2×21441411312² (a number of 21 digits) contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856723 + ... + 881394.

Almost surely, 2^21441411312 is an apocalyptic number.

It is an amenable number.

21441411312 is an abundant number, since it is smaller than the sum of its proper divisors (34164459744).

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

21441411312 is a wasteful number, since it uses less digits than its factorization.

21441411312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738385 (or 1738379 counting only the distinct ones).

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

Adding to 21441411312 its reverse (21311414412), we get a palindrome (42752825724).

The spelling of 21441411312 in words is "twenty-one billion, four hundred forty-one million, four hundred eleven thousand, three hundred twelve".