20110111022 has 4 divisors (see below), whose sum is σ = 30165166536. Its totient is φ = 10055055510.

The previous prime is 20110110991. The next prime is 20110111027. The reversal of 20110111022 is 22011101102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22011101102 = 2 ⋅11005550551.

It is a junction number, because it is equal to n+sod(n) for n = 20110110994 and 20110111012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110111027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027527754 + ... + 5027527757.

It is an arithmetic number, because the mean of its divisors is an integer number (7541291634).

Almost surely, 2^20110111022 is an apocalyptic number.

20110111022 is a deficient number, since it is larger than the sum of its proper divisors (10055055514).

20110111022 is a wasteful number, since it uses less digits than its factorization.

20110111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055055513.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110111022 its reverse (22011101102), we get a palindrome (42121212124).

The spelling of 20110111022 in words is "twenty billion, one hundred ten million, one hundred eleven thousand, twenty-two".