20121320233101 has 4 divisors (see below), whose sum is σ = 26828426977472. Its totient is φ = 13414213488732.

The previous prime is 20121320233097. The next prime is 20121320233127. The reversal of 20121320233101 is 10133202312102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20121320233101 - 2² = 20121320233097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121320233171) 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 3 ways as a sum of consecutive naturals, for example, 3353553372181 + ... + 3353553372186.

It is an arithmetic number, because the mean of its divisors is an integer number (6707106744368).

Almost surely, 2^{20121320233101} is an apocalyptic number.

It is an amenable number.

20121320233101 is a deficient number, since it is larger than the sum of its proper divisors (6707106744371).

20121320233101 is an equidigital number, since it uses as much as digits as its factorization.

20121320233101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707106744370.

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

Adding to 20121320233101 its reverse (10133202312102), we get a palindrome (30254522545203).

The spelling of 20121320233101 in words is "twenty trillion, one hundred twenty-one billion, three hundred twenty million, two hundred thirty-three thousand, one hundred one".