122142121 has 4 divisors (see below), whose sum is σ = 127452672. Its totient is φ = 116831572.

The previous prime is 122142103. The next prime is 122142131. The reversal of 122142121 is 121241221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122142121 - 2¹⁹ = 121617833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122142095 and 122142104.

It is not an unprimeable number, because it can be changed into a prime (122142131) 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, 2655241 + ... + 2655286.

It is an arithmetic number, because the mean of its divisors is an integer number (31863168).

Almost surely, 2^122142121 is an apocalyptic number.

It is an amenable number.

122142121 is a deficient number, since it is larger than the sum of its proper divisors (5310551).

122142121 is an equidigital number, since it uses as much as digits as its factorization.

122142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310550.

The product of its digits is 64, while the sum is 16.

The square root of 122142121 is about 11051.7926600167. The cubic root of 122142121 is about 496.1600801911.

Adding to 122142121 its reverse (121241221), we get a palindrome (243383342).

The spelling of 122142121 in words is "one hundred twenty-two million, one hundred forty-two thousand, one hundred twenty-one".