20112220110111 has 16 divisors (see below), whose sum is σ = 28393960299264. Its totient is φ = 12619326541184.

The previous prime is 20112220110109. The next prime is 20112220110121. The reversal of 20112220110111 is 11101102221102.

It is a happy number.

It is not a de Polignac number, because 20112220110111 - 2¹ = 20112220110109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112220110121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4738126 + ... + 7916708.

It is an arithmetic number, because the mean of its divisors is an integer number (1774622518704).

Almost surely, 2^{20112220110111} is an apocalyptic number.

20112220110111 is a deficient number, since it is larger than the sum of its proper divisors (8281740189153).

20112220110111 is a wasteful number, since it uses less digits than its factorization.

20112220110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302670.

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

Adding to 20112220110111 its reverse (11101102221102), we get a palindrome (31213322331213).

The spelling of 20112220110111 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, one hundred ten thousand, one hundred eleven".