12312210542501 has 4 divisors (see below), whose sum is σ = 12319482966252. Its totient is φ = 12304938118752.

The previous prime is 12312210542497. The next prime is 12312210542531. The reversal of 12312210542501 is 10524501221321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7610039476900 + 4702171065601 = 2758630^2 + 2168449^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312210542501 - 2² = 12312210542497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312210542531) 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, 3636209336 + ... + 3636212721.

It is an arithmetic number, because the mean of its divisors is an integer number (3079870741563).

Almost surely, 2^{12312210542501} is an apocalyptic number.

It is an amenable number.

12312210542501 is a deficient number, since it is larger than the sum of its proper divisors (7272423751).

12312210542501 is an equidigital number, since it uses as much as digits as its factorization.

12312210542501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7272423750.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 12312210542501 its reverse (10524501221321), we get a palindrome (22836711763822).

The spelling of 12312210542501 in words is "twelve trillion, three hundred twelve billion, two hundred ten million, five hundred forty-two thousand, five hundred one".