12121332143 has 16 divisors (see below), whose sum is σ = 12954028032. Its totient is φ = 11317020000.

The previous prime is 12121332079. The next prime is 12121332187. The reversal of 12121332143 is 34123312121.

It is a cyclic number.

It is not a de Polignac number, because 12121332143 - 2⁶ = 12121332079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121332943) 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, 150818 + ... + 216768.

It is an arithmetic number, because the mean of its divisors is an integer number (809626752).

Almost surely, 2^12121332143 is an apocalyptic number.

12121332143 is a deficient number, since it is larger than the sum of its proper divisors (832695889).

12121332143 is a wasteful number, since it uses less digits than its factorization.

12121332143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66166.

The product of its digits is 864, while the sum is 23.

Adding to 12121332143 its reverse (34123312121), we get a palindrome (46244644264).

The spelling of 12121332143 in words is "twelve billion, one hundred twenty-one million, three hundred thirty-two thousand, one hundred forty-three".