20110101121 has 8 divisors (see below), whose sum is σ = 22265730144. Its totient is φ = 18009045120.

The previous prime is 20110101113. The next prime is 20110101173. The reversal of 20110101121 is 12110101102.

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

It is not a de Polignac number, because 20110101121 - 2³ = 20110101113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110101098 and 20110101107.

It is not an unprimeable number, because it can be changed into a prime (20110101181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13642480 + ... + 13643953.

It is an arithmetic number, because the mean of its divisors is an integer number (2783216268).

Almost surely, 2^20110101121 is an apocalyptic number.

It is an amenable number.

20110101121 is a deficient number, since it is larger than the sum of its proper divisors (2155629023).

20110101121 is a wasteful number, since it uses less digits than its factorization.

20110101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27286511.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20110101121 its reverse (12110101102), we get a palindrome (32220202223).

The spelling of 20110101121 in words is "twenty billion, one hundred ten million, one hundred one thousand, one hundred twenty-one".