120215451841 has 3 divisors (see below), whose sum is σ = 120215798563. Its totient is φ = 120215105120.

The previous prime is 120215451823. The next prime is 120215451943. The reversal of 120215451841 is 148154512021.

The square root of 120215451841 is 346721.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 23494451841 + 96721000000 = 153279^2 + 311000^2 .

It is not a de Polignac number, because 120215451841 - 2⁵ = 120215451809 is a prime.

It is a super-2 number, since 2×120215451841² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120215451797 and 120215451806.

It is not an unprimeable number, because it can be changed into a prime (120215457841) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 173361 + ... + 520081.

Almost surely, 2^120215451841 is an apocalyptic number.

120215451841 is the 346721-st square number.

120215451841 is the 173361-st centered octagonal number.

It is an amenable number.

120215451841 is a deficient number, since it is larger than the sum of its proper divisors (346722).

120215451841 is an frugal number, since it uses more digits than its factorization.

120215451841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693442 (or 346721 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

Adding to 120215451841 its reverse (148154512021), we get a palindrome (268369963862).

The spelling of 120215451841 in words is "one hundred twenty billion, two hundred fifteen million, four hundred fifty-one thousand, eight hundred forty-one".