20231001121 has 4 divisors (see below), whose sum is σ = 20231297092. Its totient is φ = 20230705152.

The previous prime is 20231001103. The next prime is 20231001163. The reversal of 20231001121 is 12110013202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18404720896 + 1826280225 = 135664^2 + 42735^2 .

It is a cyclic number.

It is not a de Polignac number, because 20231001121 - 2²¹ = 20228903969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231001101) 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, 12721 + ... + 201553.

It is an arithmetic number, because the mean of its divisors is an integer number (5057824273).

Almost surely, 2^20231001121 is an apocalyptic number.

It is an amenable number.

20231001121 is a deficient number, since it is larger than the sum of its proper divisors (295971).

20231001121 is a wasteful number, since it uses less digits than its factorization.

20231001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295970.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20231001121 its reverse (12110013202), we get a palindrome (32341014323).

The spelling of 20231001121 in words is "twenty billion, two hundred thirty-one million, one thousand, one hundred twenty-one".