20123440022 has 16 divisors (see below), whose sum is σ = 36526580640. Its totient is φ = 8117017728.

The previous prime is 20123440013. The next prime is 20123440033. The reversal of 20123440022 is 22004432102.

It is a junction number, because it is equal to n+sod(n) for n = 20123439976 and 20123440003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42275897 + ... + 42276372.

It is an arithmetic number, because the mean of its divisors is an integer number (2282911290).

Almost surely, 2^20123440022 is an apocalyptic number.

20123440022 is a deficient number, since it is larger than the sum of its proper divisors (16403140618).

20123440022 is a wasteful number, since it uses less digits than its factorization.

20123440022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84552295.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20123440022 its reverse (22004432102), we get a palindrome (42127872124).

The spelling of 20123440022 in words is "twenty billion, one hundred twenty-three million, four hundred forty thousand, twenty-two".