20111121102110 has 32 divisors (see below), whose sum is σ = 36405083988000. Its totient is φ = 7998890590080.

The previous prime is 20111121102077. The next prime is 20111121102167. The reversal of 20111121102110 is 1120112111102.

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, 12296816 + ... + 13835964.

It is an arithmetic number, because the mean of its divisors is an integer number (1137658874625).

Almost surely, 2^{20111121102110} is an apocalyptic number.

20111121102110 is a deficient number, since it is larger than the sum of its proper divisors (16293962885890).

20111121102110 is a wasteful number, since it uses less digits than its factorization.

20111121102110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546556.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 20111121102110 its reverse (1120112111102), we get a palindrome (21231233213212).

The spelling of 20111121102110 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred ten".