20110212101121 has 16 divisors (see below), whose sum is σ = 27683327190528. Its totient is φ = 12972101155200.

The previous prime is 20110212101101. The next prime is 20110212101137. The reversal of 20110212101121 is 12110121201102.

It is a happy number.

It is not a de Polignac number, because 20110212101121 - 2²³ = 20110203712513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20110212101121.

It is not an unprimeable number, because it can be changed into a prime (20110212101101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18032676 + ... + 19115381.

It is an arithmetic number, because the mean of its divisors is an integer number (1730207949408).

Almost surely, 2^{20110212101121} is an apocalyptic number.

It is an amenable number.

20110212101121 is a deficient number, since it is larger than the sum of its proper divisors (7573115089407).

20110212101121 is a wasteful number, since it uses less digits than its factorization.

20110212101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37153912.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110212101121 its reverse (12110121201102), we get a palindrome (32220333302223).

The spelling of 20110212101121 in words is "twenty trillion, one hundred ten billion, two hundred twelve million, one hundred one thousand, one hundred twenty-one".