21020102313002 has 8 divisors (see below), whose sum is σ = 33955549890276. Its totient is φ = 9701585682912.

The previous prime is 21020102312927. The next prime is 21020102313031. The reversal of 21020102313002 is 20031320102012.

It can be written as a sum of positive squares in 2 ways, for example, as 20667288884641 + 352813428361 = 4546129^2 + 593981^2 .

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

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, 404232736763 + ... + 404232736814.

Almost surely, 2^{21020102313002} is an apocalyptic number.

21020102313002 is a deficient number, since it is larger than the sum of its proper divisors (12935447577274).

21020102313002 is a wasteful number, since it uses less digits than its factorization.

21020102313002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808465473592.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21020102313002 its reverse (20031320102012), we get a palindrome (41051422415014).

The spelling of 21020102313002 in words is "twenty-one trillion, twenty billion, one hundred two million, three hundred thirteen thousand, two".