120825221 has 4 divisors (see below), whose sum is σ = 131809344. Its totient is φ = 109841100.

The previous prime is 120825169. The next prime is 120825241. The reversal of 120825221 is 122528021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120825221 - 2⁶ = 120825157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120825241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5492045 + ... + 5492066.

It is an arithmetic number, because the mean of its divisors is an integer number (32952336).

Almost surely, 2^120825221 is an apocalyptic number.

120825221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120825221 is a deficient number, since it is larger than the sum of its proper divisors (10984123).

120825221 is a wasteful number, since it uses less digits than its factorization.

120825221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984122.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 120825221 is about 10992.0526290589. The cubic root of 120825221 is about 494.3704829525.

The spelling of 120825221 in words is "one hundred twenty million, eight hundred twenty-five thousand, two hundred twenty-one".