21111011120110 has 64 divisors (see below), whose sum is σ = 38939527353600. Its totient is φ = 8238016350720.

The previous prime is 21111011120099. The next prime is 21111011120131. The reversal of 21111011120110 is 1102111011112.

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, 61360987 + ... + 61704073.

It is an arithmetic number, because the mean of its divisors is an integer number (608430114900).

Almost surely, 2^{21111011120110} is an apocalyptic number.

21111011120110 is a deficient number, since it is larger than the sum of its proper divisors (17828516233490).

21111011120110 is a wasteful number, since it uses less digits than its factorization.

21111011120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343981.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 21111011120110 its reverse (1102111011112), we get a palindrome (22213122131222).

The spelling of 21111011120110 in words is "twenty-one trillion, one hundred eleven billion, eleven million, one hundred twenty thousand, one hundred ten".