20123022222 has 24 divisors (see below), whose sum is σ = 45103326840. Its totient is φ = 6476374800.

The previous prime is 20123022211. The next prime is 20123022229. The reversal of 20123022222 is 22222032102.

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 = 20123022195 and 20123022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123022229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19274404 + ... + 19275447.

It is an arithmetic number, because the mean of its divisors is an integer number (1879305285).

Almost surely, 2^20123022222 is an apocalyptic number.

20123022222 is an abundant number, since it is smaller than the sum of its proper divisors (24980304618).

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

20123022222 is a wasteful number, since it uses less digits than its factorization.

20123022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38549888 (or 38549885 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20123022222 its reverse (22222032102), we get a palindrome (42345054324).

The spelling of 20123022222 in words is "twenty billion, one hundred twenty-three million, twenty-two thousand, two hundred twenty-two".