21210200010004 has 12 divisors (see below), whose sum is σ = 39071421071200. Its totient is φ = 10046936846808.

The previous prime is 21210200009959. The next prime is 21210200010011. The reversal of 21210200010004 is 40001000201212.

It is a happy number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 139540789464 + ... + 139540789615.

Almost surely, 2^{21210200010004} is an apocalyptic number.

It is an amenable number.

21210200010004 is a deficient number, since it is larger than the sum of its proper divisors (17861221061196).

21210200010004 is a wasteful number, since it uses less digits than its factorization.

21210200010004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279081579102 (or 279081579100 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21210200010004 its reverse (40001000201212), we get a palindrome (61211200211216).

The spelling of 21210200010004 in words is "twenty-one trillion, two hundred ten billion, two hundred million, ten thousand, four".