21201011100110 has 64 divisors (see below), whose sum is σ = 40102499473344. Its totient is φ = 8060798592000.

The previous prime is 21201011100079. The next prime is 21201011100121. The reversal of 21201011100110 is 1100111010212.

It is a junction number, because it is equal to n+sod(n) for n = 21201011100091 and 21201011100100.

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 31 ways as a sum of consecutive naturals, for example, 5484560 + ... + 8513660.

It is an arithmetic number, because the mean of its divisors is an integer number (626601554271).

Almost surely, 2^{21201011100110} is an apocalyptic number.

21201011100110 is a deficient number, since it is larger than the sum of its proper divisors (18901488373234).

21201011100110 is a wasteful number, since it uses less digits than its factorization.

21201011100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029589.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21201011100110 its reverse (1100111010212), we get a palindrome (22301122110322).

The spelling of 21201011100110 in words is "twenty-one trillion, two hundred one billion, eleven million, one hundred thousand, one hundred ten".