20123220122222 has 48 divisors (see below), whose sum is σ = 37108272458880. Its totient is φ = 8137778670000.

The previous prime is 20123220122191. The next prime is 20123220122227. The reversal of 20123220122222 is 22222102232102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123220122227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21061154 + ... + 21995877.

It is an arithmetic number, because the mean of its divisors is an integer number (773089009560).

Almost surely, 2^{20123220122222} is an apocalyptic number.

20123220122222 is a deficient number, since it is larger than the sum of its proper divisors (16985052336658).

20123220122222 is a wasteful number, since it uses less digits than its factorization.

20123220122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43057317 (or 43057310 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20123220122222 its reverse (22222102232102), we get a palindrome (42345322354324).

The spelling of 20123220122222 in words is "twenty trillion, one hundred twenty-three billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-two".