12143235255401 has 4 divisors (see below), whose sum is σ = 12143259209172. Its totient is φ = 12143211301632.

The previous prime is 12143235255329. The next prime is 12143235255421. The reversal of 12143235255401 is 10455253234121.

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 6288940466176 + 5854294789225 = 2507776^2 + 2419565^2 .

It is a cyclic number.

It is not a de Polignac number, because 12143235255401 - 2²² = 12143231061097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12143235255421) 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, 11199656 + ... + 12235961.

It is an arithmetic number, because the mean of its divisors is an integer number (3035814802293).

Almost surely, 2^{12143235255401} is an apocalyptic number.

It is an amenable number.

12143235255401 is a deficient number, since it is larger than the sum of its proper divisors (23953771).

12143235255401 is an equidigital number, since it uses as much as digits as its factorization.

12143235255401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23953770.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 12143235255401 its reverse (10455253234121), we get a palindrome (22598488489522).

The spelling of 12143235255401 in words is "twelve trillion, one hundred forty-three billion, two hundred thirty-five million, two hundred fifty-five thousand, four hundred one".