121244121 has 12 divisors (see below), whose sum is σ = 181617072. Its totient is φ = 80829252.

The previous prime is 121244087. The next prime is 121244129. The reversal of 121244121 is 121442121.

It is not a de Polignac number, because 121244121 - 2¹³ = 121235929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121244094 and 121244103.

It is not an unprimeable number, because it can be changed into a prime (121244129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249231 + ... + 249716.

It is an arithmetic number, because the mean of its divisors is an integer number (15134756).

Almost surely, 2^121244121 is an apocalyptic number.

It is an amenable number.

121244121 is a deficient number, since it is larger than the sum of its proper divisors (60372951).

121244121 is an frugal number, since it uses more digits than its factorization.

121244121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498962 (or 498950 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 121244121 is about 11011.0908178981. The cubic root of 121244121 is about 494.9411500285.

Adding to 121244121 its reverse (121442121), we get a palindrome (242686242).

The spelling of 121244121 in words is "one hundred twenty-one million, two hundred forty-four thousand, one hundred twenty-one".