21402430343012 has 12 divisors (see below), whose sum is σ = 37454285756160. Its totient is φ = 10701205841256.

The previous prime is 21402430342991. The next prime is 21402430343057. The reversal of 21402430343012 is 21034303420412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812153 + ... + 9445119.

It is an arithmetic number, because the mean of its divisors is an integer number (3121190479680).

Almost surely, 2^{21402430343012} is an apocalyptic number.

It is an amenable number.

21402430343012 is a deficient number, since it is larger than the sum of its proper divisors (16051855413148).

21402430343012 is a wasteful number, since it uses less digits than its factorization.

21402430343012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665130 (or 4665128 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21402430343012 its reverse (21034303420412), we get a palindrome (42436733763424).

The spelling of 21402430343012 in words is "twenty-one trillion, four hundred two billion, four hundred thirty million, three hundred forty-three thousand, twelve".