12233501281 has 4 divisors (see below), whose sum is σ = 12296887492. Its totient is φ = 12170115072.

The previous prime is 12233501251. The next prime is 12233501311. The reversal of 12233501281 is 18210533221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12233501251) and next prime (12233501311).

It can be written as a sum of positive squares in 2 ways, for example, as 3190442256 + 9043059025 = 56484^2 + 95095^2 .

It is a cyclic number.

It is not a de Polignac number, because 12233501281 - 2¹⁹ = 12232976993 is a prime.

It is a super-2 number, since 2×12233501281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12233501221) 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, 31692816 + ... + 31693201.

It is an arithmetic number, because the mean of its divisors is an integer number (3074221873).

Almost surely, 2^12233501281 is an apocalyptic number.

It is an amenable number.

12233501281 is a deficient number, since it is larger than the sum of its proper divisors (63386211).

12233501281 is an equidigital number, since it uses as much as digits as its factorization.

12233501281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63386210.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 12233501281 in words is "twelve billion, two hundred thirty-three million, five hundred one thousand, two hundred eighty-one".