20112220000121 has 8 divisors (see below), whose sum is σ = 21343362408864. Its totient is φ = 18886418774080.

The previous prime is 20112220000097. The next prime is 20112220000141. The reversal of 20112220000121 is 12100002221102.

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

It is a de Polignac number, because none of the positive numbers 2^k-20112220000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112220000096 and 20112220000105.

It is not an unprimeable number, because it can be changed into a prime (20112220000141) 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, 1335287915 + ... + 1335302976.

It is an arithmetic number, because the mean of its divisors is an integer number (2667920301108).

Almost surely, 2^{20112220000121} is an apocalyptic number.

It is an amenable number.

20112220000121 is a deficient number, since it is larger than the sum of its proper divisors (1231142408743).

20112220000121 is a wasteful number, since it uses less digits than its factorization.

20112220000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670591351.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20112220000121 its reverse (12100002221102), we get a palindrome (32212222221223).

The spelling of 20112220000121 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, one hundred twenty-one", and thus it is an aban number.