20202112101121 has 4 divisors (see below), whose sum is σ = 20207004842500. Its totient is φ = 20197219359744.

The previous prime is 20202112101109. The next prime is 20202112101167. The reversal of 20202112101121 is 12110121120202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5512798764225 + 14689313336896 = 2347935^2 + 3832664^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202112101121 - 2²¹ = 20202110003969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202112101095 and 20202112101104.

It is not an unprimeable number, because it can be changed into a prime (20202112108121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2446364496 + ... + 2446372753.

It is an arithmetic number, because the mean of its divisors is an integer number (5051751210625).

Almost surely, 2^{20202112101121} is an apocalyptic number.

It is an amenable number.

20202112101121 is a deficient number, since it is larger than the sum of its proper divisors (4892741379).

20202112101121 is an equidigital number, since it uses as much as digits as its factorization.

20202112101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4892741378.

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

Adding to 20202112101121 its reverse (12110121120202), we get a palindrome (32312233221323).

The spelling of 20202112101121 in words is "twenty trillion, two hundred two billion, one hundred twelve million, one hundred one thousand, one hundred twenty-one".