12601005331 has 8 divisors (see below), whose sum is σ = 13170767904. Its totient is φ = 12033067200.

The previous prime is 12601005323. The next prime is 12601005349. The reversal of 12601005331 is 13350010621.

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 12601005331 - 2³ = 12601005323 is a prime.

It is a super-2 number, since 2×12601005331² (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 (12601005631) 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, 441976 + ... + 469621.

It is an arithmetic number, because the mean of its divisors is an integer number (1646345988).

Almost surely, 2^12601005331 is an apocalyptic number.

12601005331 is a deficient number, since it is larger than the sum of its proper divisors (569762573).

12601005331 is an equidigital number, since it uses as much as digits as its factorization.

12601005331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912221.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 12601005331 its reverse (13350010621), we get a palindrome (25951015952).

The spelling of 12601005331 in words is "twelve billion, six hundred one million, five thousand, three hundred thirty-one".