21000210110402 has 8 divisors (see below), whose sum is σ = 31518284546316. Its totient is φ = 10494115261632.

The previous prime is 21000210110401. The next prime is 21000210110413. The reversal of 21000210110402 is 20401101200012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15038023096321 + 5962187014081 = 3877889^2 + 2441759^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21000210110401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2994892403 + ... + 2994899414.

Almost surely, 2^{21000210110402} is an apocalyptic number.

21000210110402 is a deficient number, since it is larger than the sum of its proper divisors (10518074435914).

21000210110402 is a wasteful number, since it uses less digits than its factorization.

21000210110402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989793572.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21000210110402 its reverse (20401101200012), we get a palindrome (41401311310414).

The spelling of 21000210110402 in words is "twenty-one trillion, two hundred ten million, one hundred ten thousand, four hundred two".