21100011020102 has 32 divisors (see below), whose sum is σ = 36995278003200. Its totient is φ = 9021880621320.

The previous prime is 21100011019973. The next prime is 21100011020111. The reversal of 21100011020102 is 20102011000112.

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 15 ways as a sum of consecutive naturals, for example, 35386508 + ... + 35977839.

It is an arithmetic number, because the mean of its divisors is an integer number (1156102437600).

Almost surely, 2^{21100011020102} is an apocalyptic number.

21100011020102 is a deficient number, since it is larger than the sum of its proper divisors (15895266983098).

21100011020102 is an equidigital number, since it uses as much as digits as its factorization.

21100011020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71364801 (or 71364787 counting only the distinct ones).

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

Adding to 21100011020102 its reverse (20102011000112), we get a palindrome (41202022020214).

The spelling of 21100011020102 in words is "twenty-one trillion, one hundred billion, eleven million, twenty thousand, one hundred two".