21101002010102 has 16 divisors (see below), whose sum is σ = 36173208344832. Its totient is φ = 9043271065320.

The previous prime is 21101002010089. The next prime is 21101002010113. The reversal of 21101002010102 is 20101020010112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11587277 + ... + 13284087.

It is an arithmetic number, because the mean of its divisors is an integer number (2260825521552).

Almost surely, 2^{21101002010102} is an apocalyptic number.

21101002010102 is a deficient number, since it is larger than the sum of its proper divisors (15072206334730).

21101002010102 is a wasteful number, since it uses less digits than its factorization.

21101002010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585083.

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

Adding to 21101002010102 its reverse (20101020010112), we get a palindrome (41202022020214).

The spelling of 21101002010102 in words is "twenty-one trillion, one hundred one billion, two million, ten thousand, one hundred two".