20110122222 has 24 divisors (see below), whose sum is σ = 42725315256. Its totient is φ = 6309057408.

The previous prime is 20110122199. The next prime is 20110122233. The reversal of 20110122222 is 22222101102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5797033 + ... + 5800500.

It is an arithmetic number, because the mean of its divisors is an integer number (1780221469).

Almost surely, 2^20110122222 is an apocalyptic number.

20110122222 is an abundant number, since it is smaller than the sum of its proper divisors (22615193034).

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

20110122222 is a wasteful number, since it uses less digits than its factorization.

20110122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11597572 (or 11597555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20110122222 its reverse (22222101102), we get a palindrome (42332223324).

The spelling of 20110122222 in words is "twenty billion, one hundred ten million, one hundred twenty-two thousand, two hundred twenty-two".