122121201221122 has 8 divisors (see below), whose sum is σ = 187649650656972. Its totient is φ = 59571317668800.

The previous prime is 122121201221119. The next prime is 122121201221171. The reversal of 122121201221122 is 221122102121221.

It can be written as a sum of positive squares in 2 ways, for example, as 122033093765881 + 88107455241 = 11046859^2 + 296829^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 122121201221093 and 122121201221102.

It is an unprimeable number.

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, 744641470779 + ... + 744641470942.

Almost surely, 2^{122121201221122} is an apocalyptic number.

122121201221122 is a deficient number, since it is larger than the sum of its proper divisors (65528449435850).

122121201221122 is a wasteful number, since it uses less digits than its factorization.

122121201221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489282941764.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122121201221122 its reverse (221122102121221), we get a palindrome (343243303342343).

Subtracting 122121201221122 from its reverse (221122102121221), we obtain a palindrome (99000900900099).

The spelling of 122121201221122 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-two".