121040224 has 12 divisors (see below), whose sum is σ = 238298004. Its totient is φ = 60520096.

The previous prime is 121040197. The next prime is 121040233. The reversal of 121040224 is 422040121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 121040198 and 121040207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1891222 + ... + 1891285.

It is an arithmetic number, because the mean of its divisors is an integer number (19858167).

Almost surely, 2^121040224 is an apocalyptic number.

It is an amenable number.

121040224 is a deficient number, since it is larger than the sum of its proper divisors (117257780).

121040224 is an equidigital number, since it uses as much as digits as its factorization.

121040224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782517 (or 3782509 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 121040224 is about 11001.8282117110. The cubic root of 121040224 is about 494.6635458069.

Adding to 121040224 its reverse (422040121), we get a palindrome (543080345).

The spelling of 121040224 in words is "one hundred twenty-one million, forty thousand, two hundred twenty-four".