20123211312001 has 8 divisors (see below), whose sum is σ = 23001259670144. Its totient is φ = 17245988925120.

The previous prime is 20123211311999. The next prime is 20123211312023. The reversal of 20123211312001 is 10021311232102.

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 20123211312001 - 2¹ = 20123211311999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20123211312001.

It is not an unprimeable number, because it can be changed into a prime (20123211312101) 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, 206440605 + ... + 206538058.

It is an arithmetic number, because the mean of its divisors is an integer number (2875157458768).

Almost surely, 2^{20123211312001} is an apocalyptic number.

It is an amenable number.

20123211312001 is a deficient number, since it is larger than the sum of its proper divisors (2878048358143).

20123211312001 is an equidigital number, since it uses as much as digits as its factorization.

20123211312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412985631.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20123211312001 its reverse (10021311232102), we get a palindrome (30144522544103).

The spelling of 20123211312001 in words is "twenty trillion, one hundred twenty-three billion, two hundred eleven million, three hundred twelve thousand, one".