120722521 has 4 divisors (see below), whose sum is σ = 120953872. Its totient is φ = 120491172.

The previous prime is 120722519. The next prime is 120722551. The reversal of 120722521 is 125227021.

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 120722521 - 2¹ = 120722519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120722492 and 120722501.

It is not an unprimeable number, because it can be changed into a prime (120722501) 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, 114891 + ... + 115936.

It is an arithmetic number, because the mean of its divisors is an integer number (30238468).

Almost surely, 2^120722521 is an apocalyptic number.

It is an amenable number.

120722521 is a deficient number, since it is larger than the sum of its proper divisors (231351).

120722521 is an equidigital number, since it uses as much as digits as its factorization.

120722521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231350.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 120722521 is about 10987.3800789815. The cubic root of 120722521 is about 494.2303735721.

Adding to 120722521 its reverse (125227021), we get a palindrome (245949542).

The spelling of 120722521 in words is "one hundred twenty million, seven hundred twenty-two thousand, five hundred twenty-one".