20202101211121 has 8 divisors (see below), whose sum is σ = 20725403857704. Its totient is φ = 19680254206080.

The previous prime is 20202101211059. The next prime is 20202101211157. The reversal of 20202101211121 is 12111210120202.

It can be written as a sum of positive squares in 4 ways, for example, as 11490371165025 + 8711730046096 = 3389745^2 + 2951564^2 .

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 20202101211121 - 2⁹ = 20202101210609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202101211095 and 20202101211104.

It is not an unprimeable number, because it can be changed into a prime (20202101212121) 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, 363882270 + ... + 363937783.

It is an arithmetic number, because the mean of its divisors is an integer number (2590675482213).

Almost surely, 2^{20202101211121} is an apocalyptic number.

It is an amenable number.

20202101211121 is a deficient number, since it is larger than the sum of its proper divisors (523302646583).

20202101211121 is an equidigital number, since it uses as much as digits as its factorization.

20202101211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727820771.

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

Adding to 20202101211121 its reverse (12111210120202), we get a palindrome (32313311331323).

The spelling of 20202101211121 in words is "twenty trillion, two hundred two billion, one hundred one million, two hundred eleven thousand, one hundred twenty-one".