20121121002101 has 8 divisors (see below), whose sum is σ = 22995736910400. Its totient is φ = 17246547606528.

The previous prime is 20121121002067. The next prime is 20121121002181. The reversal of 20121121002101 is 10120012112102.

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 20121121002101 - 2¹⁰ = 20121121001077 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 (20121121002181) 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, 9607436 + ... + 11512821.

It is an arithmetic number, because the mean of its divisors is an integer number (2874467113800).

Almost surely, 2^{20121121002101} is an apocalyptic number.

It is an amenable number.

20121121002101 is a deficient number, since it is larger than the sum of its proper divisors (2874615908299).

20121121002101 is a wasteful number, since it uses less digits than its factorization.

20121121002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21256363.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20121121002101 its reverse (10120012112102), we get a palindrome (30241133114203).

The spelling of 20121121002101 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-one million, two thousand, one hundred one".