1214520411145 has 4 divisors (see below), whose sum is σ = 1457424493380. Its totient is φ = 971616328912.

The previous prime is 1214520411131. The next prime is 1214520411229. The reversal of 1214520411145 is 5411140254121.

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 580624188169 + 633896222976 = 761987^2 + 796176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214520411145 - 2¹¹ = 1214520409097 is a prime.

It is a super-2 number, since 2×1214520411145² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121452041110 + ... + 121452041119.

It is an arithmetic number, because the mean of its divisors is an integer number (364356123345).

Almost surely, 2^{1214520411145} is an apocalyptic number.

It is an amenable number.

1214520411145 is a deficient number, since it is larger than the sum of its proper divisors (242904082235).

1214520411145 is an equidigital number, since it uses as much as digits as its factorization.

1214520411145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242904082234.

The product of its (nonzero) digits is 6400, while the sum is 31.

Adding to 1214520411145 its reverse (5411140254121), we get a palindrome (6625660665266).

The spelling of 1214520411145 in words is "one trillion, two hundred fourteen billion, five hundred twenty million, four hundred eleven thousand, one hundred forty-five".