12072901 has 4 divisors (see below), whose sum is σ = 12367404. Its totient is φ = 11778400.

The previous prime is 12072899. The next prime is 12072913. The reversal of 12072901 is 10927021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10927021 = 7 ⋅1561003.

It can be written as a sum of positive squares in 2 ways, for example, as 682276 + 11390625 = 826^2 + 3375^2 .

It is a cyclic number.

It is not a de Polignac number, because 12072901 - 2¹ = 12072899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147190 + ... + 147271.

It is an arithmetic number, because the mean of its divisors is an integer number (3091851).

Almost surely, 2^12072901 is an apocalyptic number.

It is an amenable number.

12072901 is a deficient number, since it is larger than the sum of its proper divisors (294503).

12072901 is an equidigital number, since it uses as much as digits as its factorization.

12072901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294502.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 12072901 is about 3474.6080354480. The cubic root of 12072901 is about 229.4055284597.

Adding to 12072901 its reverse (10927021), we get a palindrome (22999922).

The spelling of 12072901 in words is "twelve million, seventy-two thousand, nine hundred one".