121202222123 has 2 divisors, whose sum is σ = 121202222124. Its totient is φ = 121202222122.

The previous prime is 121202222111. The next prime is 121202222153. The reversal of 121202222123 is 321222202121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121202222123 - 2⁸ = 121202221867 is a prime.

It is a super-3 number, since 3×121202222123³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121202222095 and 121202222104.

It is not a weakly prime, because it can be changed into another prime (121202222153) 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 as a sum of consecutive naturals, namely, 60601111061 + 60601111062.

It is an arithmetic number, because the mean of its divisors is an integer number (60601111062).

Almost surely, 2^121202222123 is an apocalyptic number.

121202222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202222123 is an equidigital number, since it uses as much as digits as its factorization.

121202222123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 121202222123 its reverse (321222202121), we get a palindrome (442424424244).

The spelling of 121202222123 in words is "one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-three".