1234513212161 has 16 divisors (see below), whose sum is σ = 1284566999040. Its totient is φ = 1184978807040.

The previous prime is 1234513212143. The next prime is 1234513212173. The reversal of 1234513212161 is 1612123154321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234513212161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1234513242161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3209216 + ... + 3573246.

It is an arithmetic number, because the mean of its divisors is an integer number (80285437440).

Almost surely, 2^{1234513212161} is an apocalyptic number.

It is an amenable number.

1234513212161 is a deficient number, since it is larger than the sum of its proper divisors (50053786879).

1234513212161 is a wasteful number, since it uses less digits than its factorization.

1234513212161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364744.

The product of its digits is 8640, while the sum is 32.

Adding to 1234513212161 its reverse (1612123154321), we get a palindrome (2846636366482).

The spelling of 1234513212161 in words is "one trillion, two hundred thirty-four billion, five hundred thirteen million, two hundred twelve thousand, one hundred sixty-one".