1220523205134 has 8 divisors (see below), whose sum is σ = 2441046410280. Its totient is φ = 406841068376.

The previous prime is 1220523205133. The next prime is 1220523205177. The reversal of 1220523205134 is 4315023250221.

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

1220523205134 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220523205133) by changing a digit.

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, 101710267089 + ... + 101710267100.

It is an arithmetic number, because the mean of its divisors is an integer number (305130801285).

Almost surely, 2^{1220523205134} is an apocalyptic number.

1220523205134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220523205134 is a wasteful number, since it uses less digits than its factorization.

1220523205134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203420534194.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 1220523205134 its reverse (4315023250221), we get a palindrome (5535546455355).

The spelling of 1220523205134 in words is "one trillion, two hundred twenty billion, five hundred twenty-three million, two hundred five thousand, one hundred thirty-four".