20000231112121 has 8 divisors (see below), whose sum is σ = 21780718412040. Its totient is φ = 18254316381312.

The previous prime is 20000231112053. The next prime is 20000231112203. The reversal of 20000231112121 is 12121113200002.

It can be written as a sum of positive squares in 4 ways, for example, as 1330183928896 + 18670047183225 = 1153336^2 + 4320885^2 .

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 20000231112121 - 2¹³ = 20000231103929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000231112095 and 20000231112104.

It is not an unprimeable number, because it can be changed into a prime (20000231112221) 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, 8643141070 + ... + 8643143383.

It is an arithmetic number, because the mean of its divisors is an integer number (2722589801505).

Almost surely, 2^{20000231112121} is an apocalyptic number.

It is an amenable number.

20000231112121 is a deficient number, since it is larger than the sum of its proper divisors (1780487299919).

20000231112121 is a wasteful number, since it uses less digits than its factorization.

20000231112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17286284555.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20000231112121 its reverse (12121113200002), we get a palindrome (32121344312123).

The spelling of 20000231112121 in words is "twenty trillion, two hundred thirty-one million, one hundred twelve thousand, one hundred twenty-one".