21231412030402 has 16 divisors (see below), whose sum is σ = 36407692444032. Its totient is φ = 9096430057920.

The previous prime is 21231412030349. The next prime is 21231412030463. The reversal of 21231412030402 is 20403021413212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228829174 + ... + 228921937.

It is an arithmetic number, because the mean of its divisors is an integer number (2275480777752).

Almost surely, 2^{21231412030402} is an apocalyptic number.

21231412030402 is a deficient number, since it is larger than the sum of its proper divisors (15176280413630).

21231412030402 is a wasteful number, since it uses less digits than its factorization.

21231412030402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457754433.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21231412030402 its reverse (20403021413212), we get a palindrome (41634433443614).

The spelling of 21231412030402 in words is "twenty-one trillion, two hundred thirty-one billion, four hundred twelve million, thirty thousand, four hundred two".