21404041033332 has 48 divisors (see below), whose sum is σ = 51250652868800. Its totient is φ = 6948789700608.

The previous prime is 21404041033313. The next prime is 21404041033337. The reversal of 21404041033332 is 23333014040412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21404041033332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404041033337) 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, 59247853 + ... + 59608020.

Almost surely, 2^{21404041033332} is an apocalyptic number.

It is an amenable number.

21404041033332 is an abundant number, since it is smaller than the sum of its proper divisors (29846611835468).

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

21404041033332 is a wasteful number, since it uses less digits than its factorization.

21404041033332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118856272 (or 118856270 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21404041033332 its reverse (23333014040412), we get a palindrome (44737055073744).

The spelling of 21404041033332 in words is "twenty-one trillion, four hundred four billion, forty-one million, thirty-three thousand, three hundred thirty-two".