21110210001002 has 8 divisors (see below), whose sum is σ = 31665348871716. Its totient is φ = 10555093710432.

The previous prime is 21110210000989. The next prime is 21110210001043. The reversal of 21110210001002 is 20010001201112.

It can be written as a sum of positive squares in 2 ways, for example, as 20280782689561 + 829427311441 = 4503419^2 + 910729^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3073493 + ... + 7187960.

Almost surely, 2^{21110210001002} is an apocalyptic number.

21110210001002 is a deficient number, since it is larger than the sum of its proper divisors (10555138870714).

21110210001002 is a wasteful number, since it uses less digits than its factorization.

21110210001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11290072.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21110210001002 its reverse (20010001201112), we get a palindrome (41120211202114).

The spelling of 21110210001002 in words is "twenty-one trillion, one hundred ten billion, two hundred ten million, one thousand, two".