20012121201121 has 8 divisors (see below), whose sum is σ = 22871295538304. Its totient is φ = 17153021833920.

The previous prime is 20012121201049. The next prime is 20012121201133. The reversal of 20012121201121 is 12110212121002.

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

It is not a de Polignac number, because 20012121201121 - 2⁷ = 20012121200993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012121201095 and 20012121201104.

It is not an unprimeable number, because it can be changed into a prime (20012121201221) 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, 18169320 + ... + 19239241.

It is an arithmetic number, because the mean of its divisors is an integer number (2858911942288).

Almost surely, 2^{20012121201121} is an apocalyptic number.

It is an amenable number.

20012121201121 is a deficient number, since it is larger than the sum of its proper divisors (2859174337183).

20012121201121 is an equidigital number, since it uses as much as digits as its factorization.

20012121201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37484991.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20012121201121 its reverse (12110212121002), we get a palindrome (32122333322123).

The spelling of 20012121201121 in words is "twenty trillion, twelve billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-one".