20112012022121 has 8 divisors (see below), whose sum is σ = 21296419370784. Its totient is φ = 18927754431040.

The previous prime is 20112012022117. The next prime is 20112012022159. The reversal of 20112012022121 is 12122021021102.

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 20112012022121 - 2² = 20112012022117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20112012022121.

It is not an unprimeable number, because it can be changed into a prime (20112012022111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37162835 + ... + 37700136.

It is an arithmetic number, because the mean of its divisors is an integer number (2662052421348).

Almost surely, 2^{20112012022121} is an apocalyptic number.

It is an amenable number.

20112012022121 is a deficient number, since it is larger than the sum of its proper divisors (1184407348663).

20112012022121 is a wasteful number, since it uses less digits than its factorization.

20112012022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74878791.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112012022121 its reverse (12122021021102), we get a palindrome (32234033043223).

The spelling of 20112012022121 in words is "twenty trillion, one hundred twelve billion, twelve million, twenty-two thousand, one hundred twenty-one".