20123001001 has 8 divisors (see below), whose sum is σ = 21073725504. Its totient is φ = 19178594160.

The previous prime is 20123000999. The next prime is 20123001007. The reversal of 20123001001 is 10010032102.

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

It is not a de Polignac number, because 20123001001 - 2¹ = 20123000999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123001007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572895 + ... + 1585636.

It is an arithmetic number, because the mean of its divisors is an integer number (2634215688).

Almost surely, 2^20123001001 is an apocalyptic number.

It is an amenable number.

20123001001 is a deficient number, since it is larger than the sum of its proper divisors (950724503).

20123001001 is a wasteful number, since it uses less digits than its factorization.

20123001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158831.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20123001001 its reverse (10010032102), we get a palindrome (30133033103).

The spelling of 20123001001 in words is "twenty billion, one hundred twenty-three million, one thousand, one".