21404132002 has 16 divisors (see below), whose sum is σ = 35027365824. Its totient is φ = 9728478000.

The previous prime is 21404131909. The next prime is 21404132003. The reversal of 21404132002 is 20023140412.

It is not an unprimeable number, because it can be changed into a prime (21404132003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439552 + ... + 485812.

It is an arithmetic number, because the mean of its divisors is an integer number (2189210364).

Almost surely, 2^21404132002 is an apocalyptic number.

21404132002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21404132002 is a deficient number, since it is larger than the sum of its proper divisors (13623233822).

21404132002 is a wasteful number, since it uses less digits than its factorization.

21404132002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67305.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21404132002 its reverse (20023140412), we get a palindrome (41427272414).

The spelling of 21404132002 in words is "twenty-one billion, four hundred four million, one hundred thirty-two thousand, two".