120221525 has 12 divisors (see below), whose sum is σ = 149462532. Its totient is φ = 95927040.

The previous prime is 120221477. The next prime is 120221533. The reversal of 120221525 is 525122021.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2845969 + 117375556 = 1687^2 + 10834^2 .

It is not a de Polignac number, because 120221525 - 2⁶ = 120221461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120221497 and 120221506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3869 + ... + 15981.

It is an arithmetic number, because the mean of its divisors is an integer number (12455211).

Almost surely, 2^120221525 is an apocalyptic number.

It is an amenable number.

120221525 is a deficient number, since it is larger than the sum of its proper divisors (29241007).

120221525 is a wasteful number, since it uses less digits than its factorization.

120221525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12520 (or 12515 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 120221525 is about 10964.5576746169. The cubic root of 120221525 is about 493.5457436399.

Adding to 120221525 its reverse (525122021), we get a palindrome (645343546).

The spelling of 120221525 in words is "one hundred twenty million, two hundred twenty-one thousand, five hundred twenty-five".