122212132121 has 8 divisors (see below), whose sum is σ = 122862117000. Its totient is φ = 121563861120.

The previous prime is 122212132111. The next prime is 122212132153. The reversal of 122212132121 is 121231212221.

It can be written as a sum of positive squares in 4 ways, for example, as 49891476496 + 72320655625 = 223364^2 + 268925^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 122212132121 - 2¹⁴ = 122212115737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122212132093 and 122212132102.

It is not an unprimeable number, because it can be changed into a prime (122212132111) 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 7 ways as a sum of consecutive naturals, for example, 285350 + ... + 570831.

It is an arithmetic number, because the mean of its divisors is an integer number (15357764625).

Almost surely, 2^122212132121 is an apocalyptic number.

It is an amenable number.

122212132121 is a deficient number, since it is larger than the sum of its proper divisors (649984879).

122212132121 is an equidigital number, since it uses as much as digits as its factorization.

122212132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856939.

The product of its digits is 192, while the sum is 20.

Adding to 122212132121 its reverse (121231212221), we get a palindrome (243443344342).

The spelling of 122212132121 in words is "one hundred twenty-two billion, two hundred twelve million, one hundred thirty-two thousand, one hundred twenty-one".