121747225 has 6 divisors (see below), whose sum is σ = 150966590. Its totient is φ = 97397760.

The previous prime is 121747187. The next prime is 121747243. The reversal of 121747225 is 522747121.

It can be written as a sum of positive squares in 3 ways, for example, as 30869136 + 90878089 = 5556^2 + 9533^2 .

It is not a de Polignac number, because 121747225 - 2²¹ = 119650073 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2434920 + ... + 2434969.

Almost surely, 2^121747225 is an apocalyptic number.

It is an amenable number.

121747225 is a deficient number, since it is larger than the sum of its proper divisors (29219365).

121747225 is an equidigital number, since it uses as much as digits as its factorization.

121747225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4869899 (or 4869894 counting only the distinct ones).

The product of its digits is 7840, while the sum is 31.

The square root of 121747225 is about 11033.9124973873. The cubic root of 121747225 is about 495.6247934718.

The spelling of 121747225 in words is "one hundred twenty-one million, seven hundred forty-seven thousand, two hundred twenty-five".