20111112220110 has 16 divisors (see below), whose sum is σ = 48266669328336. Its totient is φ = 5362963258688.

The previous prime is 20111112220081. The next prime is 20111112220117. The reversal of 20111112220110 is 1102221111102.

It is a happy number.

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 20111112220110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111112220117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335185203639 + ... + 335185203698.

It is an arithmetic number, because the mean of its divisors is an integer number (3016666833021).

Almost surely, 2^{20111112220110} is an apocalyptic number.

20111112220110 is an abundant number, since it is smaller than the sum of its proper divisors (28155557108226).

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

20111112220110 is a wasteful number, since it uses less digits than its factorization.

20111112220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670370407347.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111112220110 its reverse (1102221111102), we get a palindrome (21213333331212).

The spelling of 20111112220110 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty thousand, one hundred ten".