12140533121 has 4 divisors (see below), whose sum is σ = 12147058644. Its totient is φ = 12134007600.

The previous prime is 12140533103. The next prime is 12140533127. The reversal of 12140533121 is 12133504121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12133504121 = 193 ⋅62867897.

It can be written as a sum of positive squares in 2 ways, for example, as 833188225 + 11307344896 = 28865^2 + 106336^2 .

It is a cyclic number.

It is not a de Polignac number, because 12140533121 - 2¹⁴ = 12140516737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12140533127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3259970 + ... + 3263691.

It is an arithmetic number, because the mean of its divisors is an integer number (3036764661).

Almost surely, 2^12140533121 is an apocalyptic number.

It is an amenable number.

12140533121 is a deficient number, since it is larger than the sum of its proper divisors (6525523).

12140533121 is an equidigital number, since it uses as much as digits as its factorization.

12140533121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525522.

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 12140533121 in words is "twelve billion, one hundred forty million, five hundred thirty-three thousand, one hundred twenty-one".