1372212105569 has 4 divisors (see below), whose sum is σ = 1372660397460. Its totient is φ = 1371763813680.

The previous prime is 1372212105557. The next prime is 1372212105587. The reversal of 1372212105569 is 9655012122731.

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 659850785344 + 712361320225 = 812312^2 + 844015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1372212105569 is a prime.

It is a super-2 number, since 2×1372212105569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1372212105529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224141354 + ... + 224147475.

It is an arithmetic number, because the mean of its divisors is an integer number (343165099365).

Almost surely, 2^{1372212105569} is an apocalyptic number.

It is an amenable number.

1372212105569 is a deficient number, since it is larger than the sum of its proper divisors (448291891).

1372212105569 is an equidigital number, since it uses as much as digits as its factorization.

1372212105569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448291890.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 1372212105569 in words is "one trillion, three hundred seventy-two billion, two hundred twelve million, one hundred five thousand, five hundred sixty-nine".