20121002122101 has 8 divisors (see below), whose sum is σ = 26828631776544. Its totient is φ = 13413686941200.

The previous prime is 20121002122099. The next prime is 20121002122147. The reversal of 20121002122101 is 10122120012102.

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

It is not a de Polignac number, because 20121002122101 - 2¹ = 20121002122099 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121002122801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78469050 + ... + 78725051.

It is an arithmetic number, because the mean of its divisors is an integer number (3353578972068).

Almost surely, 2^{20121002122101} is an apocalyptic number.

It is an amenable number.

20121002122101 is a deficient number, since it is larger than the sum of its proper divisors (6707629654443).

20121002122101 is a wasteful number, since it uses less digits than its factorization.

20121002122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157236771.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121002122101 its reverse (10122120012102), we get a palindrome (30243122134203).

The spelling of 20121002122101 in words is "twenty trillion, one hundred twenty-one billion, two million, one hundred twenty-two thousand, one hundred one".