21101011202110 has 32 divisors (see below), whose sum is σ = 43526071895040. Its totient is φ = 7214919508512.

The previous prime is 21101011202099. The next prime is 21101011202119. The reversal of 21101011202110 is 1120211010112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101011202119) by changing a digit.

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, 410659620 + ... + 410710999.

It is an arithmetic number, because the mean of its divisors is an integer number (1360189746720).

Almost surely, 2^{21101011202110} is an apocalyptic number.

21101011202110 is an abundant number, since it is smaller than the sum of its proper divisors (22425060692930).

21101011202110 is a wasteful number, since it uses less digits than its factorization.

21101011202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821371000.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21101011202110 its reverse (1120211010112), we get a palindrome (22221222212222).

The spelling of 21101011202110 in words is "twenty-one trillion, one hundred one billion, eleven million, two hundred two thousand, one hundred ten".