21404241412 has 12 divisors (see below), whose sum is σ = 37499849296. Its totient is φ = 10689998760.

The previous prime is 21404241371. The next prime is 21404241421. The reversal of 21404241412 is 21414240412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026514 + ... + 3033577.

Almost surely, 2^21404241412 is an apocalyptic number.

It is an amenable number.

21404241412 is a deficient number, since it is larger than the sum of its proper divisors (16095607884).

21404241412 is a wasteful number, since it uses less digits than its factorization.

21404241412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060978 (or 6060976 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 21404241412 its reverse (21414240412), we get a palindrome (42818481824).

The spelling of 21404241412 in words is "twenty-one billion, four hundred four million, two hundred forty-one thousand, four hundred twelve".