20232021011 has 4 divisors (see below), whose sum is σ = 21422139912. Its totient is φ = 19041902112.

The previous prime is 20232020993. The next prime is 20232021037. The reversal of 20232021011 is 11012023202.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20232021011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20232021041) 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, 595059425 + ... + 595059458.

It is an arithmetic number, because the mean of its divisors is an integer number (5355534978).

Almost surely, 2^20232021011 is an apocalyptic number.

20232021011 is a deficient number, since it is larger than the sum of its proper divisors (1190118901).

20232021011 is a wasteful number, since it uses less digits than its factorization.

20232021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190118900.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20232021011 its reverse (11012023202), we get a palindrome (31244044213).

The spelling of 20232021011 in words is "twenty billion, two hundred thirty-two million, twenty-one thousand, eleven".