20121132323 has 16 divisors (see below), whose sum is σ = 21719003040. Its totient is φ = 18572630016.

The previous prime is 20121132257. The next prime is 20121132377. The reversal of 20121132323 is 32323112102.

It is not a de Polignac number, because 20121132323 - 2¹² = 20121128227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121132295 and 20121132304.

It is not an unprimeable number, because it can be changed into a prime (20121132923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141263 + ... + 245351.

It is an arithmetic number, because the mean of its divisors is an integer number (1357437690).

Almost surely, 2^20121132323 is an apocalyptic number.

20121132323 is a deficient number, since it is larger than the sum of its proper divisors (1597870717).

20121132323 is a wasteful number, since it uses less digits than its factorization.

20121132323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104326.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20121132323 its reverse (32323112102), we get a palindrome (52444244425).

The spelling of 20121132323 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-two thousand, three hundred twenty-three".