20121201010101 has 8 divisors (see below), whose sum is σ = 28240282119520. Its totient is φ = 12708126953712.

The previous prime is 20121201010093. The next prime is 20121201010111. The reversal of 20121201010101 is 10101010212102.

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

It is not a de Polignac number, because 20121201010101 - 2³ = 20121201010093 is a prime.

It is a Duffinian number.

20121201010101 is a modest number, since divided by 1010101 gives 201212 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121201010111) 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, 176501763190 + ... + 176501763303.

It is an arithmetic number, because the mean of its divisors is an integer number (3530035264940).

Almost surely, 2^{20121201010101} is an apocalyptic number.

It is an amenable number.

20121201010101 is a deficient number, since it is larger than the sum of its proper divisors (8119081109419).

20121201010101 is a wasteful number, since it uses less digits than its factorization.

20121201010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353003526515.

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

Adding to 20121201010101 its reverse (10101010212102), we get a palindrome (30222211222203).

The spelling of 20121201010101 in words is "twenty trillion, one hundred twenty-one billion, two hundred one million, ten thousand, one hundred one".