20123220009 has 8 divisors (see below), whose sum is σ = 27068402592. Its totient is φ = 13296758720.

The previous prime is 20123220001. The next prime is 20123220037. The reversal of 20123220009 is 90002232102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123220009 - 2³ = 20123220001 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 29679927 + ... + 29680604.

It is an arithmetic number, because the mean of its divisors is an integer number (3383550324).

Almost surely, 2^20123220009 is an apocalyptic number.

It is an amenable number.

20123220009 is a deficient number, since it is larger than the sum of its proper divisors (6945182583).

20123220009 is a wasteful number, since it uses less digits than its factorization.

20123220009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59360647.

The product of its (nonzero) digits is 432, while the sum is 21.

The spelling of 20123220009 in words is "twenty billion, one hundred twenty-three million, two hundred twenty thousand, nine".