1212325651345 has 8 divisors (see below), whose sum is σ = 1504955981160. Its totient is φ = 936417054720.

The previous prime is 1212325651343. The next prime is 1212325651379. The reversal of 1212325651345 is 5431565232121.

It can be written as a sum of positive squares in 4 ways, for example, as 943656961 + 1211381994384 = 30719^2 + 1100628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1212325651345 - 2¹ = 1212325651343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212325651298 and 1212325651307.

It is not an unprimeable number, because it can be changed into a prime (1212325651343) 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, 4180433136 + ... + 4180433425.

It is an arithmetic number, because the mean of its divisors is an integer number (188119497645).

Almost surely, 2^{1212325651345} is an apocalyptic number.

It is an amenable number.

1212325651345 is a deficient number, since it is larger than the sum of its proper divisors (292630329815).

1212325651345 is an equidigital number, since it uses as much as digits as its factorization.

1212325651345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8360866595.

The product of its digits is 216000, while the sum is 40.

The spelling of 1212325651345 in words is "one trillion, two hundred twelve billion, three hundred twenty-five million, six hundred fifty-one thousand, three hundred forty-five".