20113121011110 has 64 divisors (see below), whose sum is σ = 48858859445760. Its totient is φ = 5298251016960.

The previous prime is 20113121010989. The next prime is 20113121011117. The reversal of 20113121011110 is 1111012131102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20113121011110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113121011117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20743311 + ... + 21691269.

It is an arithmetic number, because the mean of its divisors is an integer number (763419678840).

Almost surely, 2^{20113121011110} is an apocalyptic number.

20113121011110 is an abundant number, since it is smaller than the sum of its proper divisors (28745738434650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20113121011110 is a wasteful number, since it uses less digits than its factorization.

20113121011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956573.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 20113121011110 its reverse (1111012131102), we get a palindrome (21224133142212).

The spelling of 20113121011110 in words is "twenty trillion, one hundred thirteen billion, one hundred twenty-one million, eleven thousand, one hundred ten".