21210003675006 has 32 divisors (see below), whose sum is σ = 42472695003648. Its totient is φ = 7061223859200.

The previous prime is 21210003674999. The next prime is 21210003675023. The reversal of 21210003675006 is 60057630001212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21313371 + ... + 22286313.

It is an arithmetic number, because the mean of its divisors is an integer number (1327271718864).

Almost surely, 2^{21210003675006} is an apocalyptic number.

21210003675006 is an abundant number, since it is smaller than the sum of its proper divisors (21262691328642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21210003675006 is a wasteful number, since it uses less digits than its factorization.

21210003675006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977456.

The product of its (nonzero) digits is 15120, while the sum is 33.

Adding to 21210003675006 its reverse (60057630001212), we get a palindrome (81267633676218).

The spelling of 21210003675006 in words is "twenty-one trillion, two hundred ten billion, three million, six hundred seventy-five thousand, six".