20202303113021 has 8 divisors (see below), whose sum is σ = 20291260689720. Its totient is φ = 20113351953408.

The previous prime is 20202303112973. The next prime is 20202303113023. The reversal of 20202303113021 is 12031130320202.

It can be written as a sum of positive squares in 4 ways, for example, as 7737237364921 + 12465065748100 = 2781589^2 + 3530590^2 .

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 20202303113021 - 2³⁴ = 20185123243837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20202303112984 and 20202303113002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202303113023) 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, 4761485 + ... + 7942061.

It is an arithmetic number, because the mean of its divisors is an integer number (2536407586215).

Almost surely, 2^{20202303113021} is an apocalyptic number.

It is an amenable number.

20202303113021 is a deficient number, since it is larger than the sum of its proper divisors (88957576699).

20202303113021 is a wasteful number, since it uses less digits than its factorization.

20202303113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208543.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20202303113021 its reverse (12031130320202), we get a palindrome (32233433433223).

The spelling of 20202303113021 in words is "twenty trillion, two hundred two billion, three hundred three million, one hundred thirteen thousand, twenty-one".