20123312001 has 8 divisors (see below), whose sum is σ = 28895012160. Its totient is φ = 12383576592.

The previous prime is 20123311987. The next prime is 20123312003. The reversal of 20123312001 is 10021332102.

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

It is not a de Polignac number, because 20123312001 - 2⁶ = 20123311937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20123312003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257991141 + ... + 257991218.

It is an arithmetic number, because the mean of its divisors is an integer number (3611876520).

Almost surely, 2^20123312001 is an apocalyptic number.

It is an amenable number.

20123312001 is a deficient number, since it is larger than the sum of its proper divisors (8771700159).

20123312001 is a wasteful number, since it uses less digits than its factorization.

20123312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515982375.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20123312001 its reverse (10021332102), we get a palindrome (30144644103).

The spelling of 20123312001 in words is "twenty billion, one hundred twenty-three million, three hundred twelve thousand, one".