21103213202102 has 16 divisors (see below), whose sum is σ = 31848507744000. Its totient is φ = 10487159349480.

The previous prime is 21103213202077. The next prime is 21103213202213. The reversal of 21103213202102 is 20120231230112.

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 7 ways as a sum of consecutive naturals, for example, 28482524 + ... + 29214047.

It is an arithmetic number, because the mean of its divisors is an integer number (1990531734000).

Almost surely, 2^{21103213202102} is an apocalyptic number.

21103213202102 is a deficient number, since it is larger than the sum of its proper divisors (10745294541898).

21103213202102 is a wasteful number, since it uses less digits than its factorization.

21103213202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57697691.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21103213202102 its reverse (20120231230112), we get a palindrome (41223444432214).

The spelling of 21103213202102 in words is "twenty-one trillion, one hundred three billion, two hundred thirteen million, two hundred two thousand, one hundred two".