121443025 has 24 divisors (see below), whose sum is σ = 168301728. Its totient is φ = 86160000.

The previous prime is 121443001. The next prime is 121443031. The reversal of 121443025 is 520344121.

It is a de Polignac number, because none of the positive numbers 2^k-121443025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121442987 and 121443005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5890 + ... + 16660.

It is an arithmetic number, because the mean of its divisors is an integer number (7012572).

Almost surely, 2^121443025 is an apocalyptic number.

It is an amenable number.

121443025 is a deficient number, since it is larger than the sum of its proper divisors (46858703).

121443025 is a wasteful number, since it uses less digits than its factorization.

121443025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833 (or 10828 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 121443025 is about 11020.1191009898. The cubic root of 121443025 is about 495.2116565857.

Adding to 121443025 its reverse (520344121), we get a palindrome (641787146).

The spelling of 121443025 in words is "one hundred twenty-one million, four hundred forty-three thousand, twenty-five".