121221124 has 6 divisors (see below), whose sum is σ = 212136974. Its totient is φ = 60610560.

The previous prime is 121221103. The next prime is 121221167. The reversal of 121221124 is 421122121.

It can be written as a sum of positive squares in only one way, i.e., 121220100 + 1024 = 11010^2 + 32^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121221098 and 121221107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152637 + ... + 15152644.

Almost surely, 2^121221124 is an apocalyptic number.

It is an amenable number.

121221124 is a deficient number, since it is larger than the sum of its proper divisors (90915850).

121221124 is a wasteful number, since it uses less digits than its factorization.

121221124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30305285 (or 30305283 counting only the distinct ones).

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

The square root of 121221124 is about 11010.0465030807. The cubic root of 121221124 is about 494.9098553665.

Adding to 121221124 its reverse (421122121), we get a palindrome (542343245).

The spelling of 121221124 in words is "one hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-four".