20123230011 has 8 divisors (see below), whose sum is σ = 28243129920. Its totient is φ = 12709408392.

The previous prime is 20123230009. The next prime is 20123230027. The reversal of 20123230011 is 11003232102.

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

It is not a de Polignac number, because 20123230011 - 2¹ = 20123230009 is a prime.

It is a super-2 number, since 2×20123230011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20123230091) 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, 176519505 + ... + 176519618.

It is an arithmetic number, because the mean of its divisors is an integer number (3530391240).

Almost surely, 2^20123230011 is an apocalyptic number.

20123230011 is a deficient number, since it is larger than the sum of its proper divisors (8119899909).

20123230011 is a wasteful number, since it uses less digits than its factorization.

20123230011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353039145.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20123230011 its reverse (11003232102), we get a palindrome (31126462113).

The spelling of 20123230011 in words is "twenty billion, one hundred twenty-three million, two hundred thirty thousand, eleven".