21432301402 has 8 divisors (see below), whose sum is σ = 32896090656. Its totient is φ = 10466937852.

The previous prime is 21432301381. The next prime is 21432301447. The reversal of 21432301402 is 20410323412.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 124606318 + ... + 124606489.

It is an arithmetic number, because the mean of its divisors is an integer number (4112011332).

Almost surely, 2^21432301402 is an apocalyptic number.

21432301402 is a deficient number, since it is larger than the sum of its proper divisors (11463789254).

21432301402 is a wasteful number, since it uses less digits than its factorization.

21432301402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249212852.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21432301402 its reverse (20410323412), we get a palindrome (41842624814).

The spelling of 21432301402 in words is "twenty-one billion, four hundred thirty-two million, three hundred one thousand, four hundred two".