21221141343404 has 48 divisors (see below), whose sum is σ = 37889453255808. Its totient is φ = 10397479292928.

The previous prime is 21221141343403. The next prime is 21221141343443. The reversal of 21221141343404 is 40434314112212.

It is not an unprimeable number, because it can be changed into a prime (21221141343403) 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, 605902637 + ... + 605937659.

It is an arithmetic number, because the mean of its divisors is an integer number (789363609496).

Almost surely, 2^{21221141343404} is an apocalyptic number.

It is an amenable number.

21221141343404 is a deficient number, since it is larger than the sum of its proper divisors (16668311912404).

21221141343404 is a wasteful number, since it uses less digits than its factorization.

21221141343404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48474 (or 48472 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21221141343404 its reverse (40434314112212), we get a palindrome (61655455455616).

The spelling of 21221141343404 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred forty-one million, three hundred forty-three thousand, four hundred four".