20123220006 has 24 divisors (see below), whose sum is σ = 43607897424. Its totient is φ = 6706572720.

The previous prime is 20123220001. The next prime is 20123220037. The reversal of 20123220006 is 60002232102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123220001) 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, 12376 + ... + 200996.

It is an arithmetic number, because the mean of its divisors is an integer number (1816995726).

Almost surely, 2^20123220006 is an apocalyptic number.

20123220006 is an abundant number, since it is smaller than the sum of its proper divisors (23484677418).

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

20123220006 is a wasteful number, since it uses less digits than its factorization.

20123220006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194556 (or 194553 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20123220006 its reverse (60002232102), we get a palindrome (80125452108).

The spelling of 20123220006 in words is "twenty billion, one hundred twenty-three million, two hundred twenty thousand, six".