20111110222122 has 96 divisors (see below), whose sum is σ = 45704572617600. Its totient is φ = 6379005384576.

The previous prime is 20111110222081. The next prime is 20111110222193. The reversal of 20111110222122 is 22122201111102.

20111110222122 is a `hidden beast` number, since 201 + 11 + 110 + 222 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20111110222095 and 20111110222104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 116430273 + ... + 116602875.

It is an arithmetic number, because the mean of its divisors is an integer number (476089298100).

Almost surely, 2^{20111110222122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111110222122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22852286308800).

20111110222122 is an abundant number, since it is smaller than the sum of its proper divisors (25593462395478).

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

20111110222122 is a wasteful number, since it uses less digits than its factorization.

20111110222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174092 (or 174089 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20111110222122 its reverse (22122201111102), we get a palindrome (42233311333224).

It can be divided in two parts, 201111102 and 22122, that multiplied together give a palindrome (4448979798444).

The spelling of 20111110222122 in words is "twenty trillion, one hundred eleven billion, one hundred ten million, two hundred twenty-two thousand, one hundred twenty-two".