20121100021101 has 8 divisors (see below), whose sum is σ = 26828367822400. Its totient is φ = 13413949450272.

The previous prime is 20121100021093. The next prime is 20121100021129. The reversal of 20121100021101 is 10112000112102.

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

It is not a de Polignac number, because 20121100021101 - 2³ = 20121100021093 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 (20121100021201) 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, 28906345 + ... + 29594238.

It is an arithmetic number, because the mean of its divisors is an integer number (3353545977800).

Almost surely, 2^{20121100021101} is an apocalyptic number.

It is an amenable number.

20121100021101 is a deficient number, since it is larger than the sum of its proper divisors (6707267801299).

20121100021101 is a wasteful number, since it uses less digits than its factorization.

20121100021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58615235.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20121100021101 its reverse (10112000112102), we get a palindrome (30233100133203).

The spelling of 20121100021101 in words is "twenty trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, one hundred one".