122161434256 has 45 divisors (see below), whose sum is σ = 240930110953. Its totient is φ = 60004906880.

The previous prime is 122161434253. The next prime is 122161434341. The reversal of 122161434256 is 652434161221.

The square root of 122161434256 is 349516.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 52296371856 + 69865062400 = 228684^2 + 264320^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122161434253) 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 8 ways as a sum of consecutive naturals, for example, 82485036 + ... + 82486516.

Almost surely, 2^122161434256 is an apocalyptic number.

122161434256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

122161434256 is the 349516-th square number.

It is an amenable number.

122161434256 is a deficient number, since it is larger than the sum of its proper divisors (118768676697).

122161434256 is an frugal number, since it uses more digits than its factorization.

122161434256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088 (or 1542 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

Adding to 122161434256 its reverse (652434161221), we get a palindrome (774595595477).

The spelling of 122161434256 in words is "one hundred twenty-two billion, one hundred sixty-one million, four hundred thirty-four thousand, two hundred fifty-six".