13212143220325 has 36 divisors (see below), whose sum is σ = 19058915540100. Its totient is φ = 9059245251840.

The previous prime is 13212143220323. The next prime is 13212143220329. The reversal of 13212143220325 is 52302234121231.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3234839656356 + 9977303563969 = 1798566^2 + 3158687^2 .

It is not a de Polignac number, because 13212143220325 - 2¹ = 13212143220323 is a prime.

It is a super-2 number, since 2×13212143220325² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212143220323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22138951 + ... + 22727899.

Almost surely, 2^{13212143220325} is an apocalyptic number.

It is an amenable number.

13212143220325 is a deficient number, since it is larger than the sum of its proper divisors (5846772319775).

13212143220325 is a wasteful number, since it uses less digits than its factorization.

13212143220325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607286 (or 607274 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 13212143220325 its reverse (52302234121231), we get a palindrome (65514377341556).

The spelling of 13212143220325 in words is "thirteen trillion, two hundred twelve billion, one hundred forty-three million, two hundred twenty thousand, three hundred twenty-five".