20233121233 has 8 divisors (see below), whose sum is σ = 22005254376. Its totient is φ = 18491808000.

The previous prime is 20233121221. The next prime is 20233121267. The reversal of 20233121233 is 33212133202.

It can be written as a sum of positive squares in 4 ways, for example, as 1218917569 + 19014203664 = 34913^2 + 137892^2 .

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 20233121233 - 2²¹ = 20231024081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233121213) 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, 7703608 + ... + 7706233.

It is an arithmetic number, because the mean of its divisors is an integer number (2750656797).

Almost surely, 2^20233121233 is an apocalyptic number.

It is an amenable number.

20233121233 is a deficient number, since it is larger than the sum of its proper divisors (1772133143).

20233121233 is a wasteful number, since it uses less digits than its factorization.

20233121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15409955.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20233121233 its reverse (33212133202), we get a palindrome (53445254435).

The spelling of 20233121233 in words is "twenty billion, two hundred thirty-three million, one hundred twenty-one thousand, two hundred thirty-three".