20121232323 has 8 divisors (see below), whose sum is σ = 26912942928. Its totient is φ = 13371838304.

The previous prime is 20121232291. The next prime is 20121232331. The reversal of 20121232323 is 32323212102.

It is a happy number.

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 20121232323 - 2⁵ = 20121232291 is a prime.

It is a super-2 number, since 2×20121232323² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20121232323.

It is not an unprimeable number, because it can be changed into a prime (20121232723) 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, 10578036 + ... + 10579937.

It is an arithmetic number, because the mean of its divisors is an integer number (3364117866).

Almost surely, 2^20121232323 is an apocalyptic number.

20121232323 is a deficient number, since it is larger than the sum of its proper divisors (6791710605).

20121232323 is a wasteful number, since it uses less digits than its factorization.

20121232323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21158293.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20121232323 its reverse (32323212102), we get a palindrome (52444444425).

The spelling of 20121232323 in words is "twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred twenty-three".