202023311121023 has 8 divisors (see below), whose sum is σ = 230885440204800. Its totient is φ = 173161596053880.

The previous prime is 202023311121011. The next prime is 202023311121043. The reversal of 202023311121023 is 320121113320202.

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

It is not a de Polignac number, because 202023311121023 - 2¹² = 202023311116927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202023311121023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202023311121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102457823 + ... + 104410976.

It is an arithmetic number, because the mean of its divisors is an integer number (28860680025600).

Almost surely, 2^{202023311121023} is an apocalyptic number.

202023311121023 is a deficient number, since it is larger than the sum of its proper divisors (28862129083777).

202023311121023 is a wasteful number, since it uses less digits than its factorization.

202023311121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207008317.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 202023311121023 its reverse (320121113320202), we get a palindrome (522144424441225).

The spelling of 202023311121023 in words is "two hundred two trillion, twenty-three billion, three hundred eleven million, one hundred twenty-one thousand, twenty-three".