120231215365 has 4 divisors (see below), whose sum is σ = 144277458444. Its totient is φ = 96184972288.

The previous prime is 120231215353. The next prime is 120231215369. The reversal of 120231215365 is 563512132021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563512132021 = 89 ⋅6331596989.

It can be written as a sum of positive squares in 2 ways, for example, as 65856903876 + 54374311489 = 256626^2 + 233183^2 .

It is a cyclic number.

It is not a de Polignac number, because 120231215365 - 2¹⁷ = 120231084293 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 (120231215369) 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, 12023121532 + ... + 12023121541.

It is an arithmetic number, because the mean of its divisors is an integer number (36069364611).

Almost surely, 2^120231215365 is an apocalyptic number.

It is an amenable number.

120231215365 is a deficient number, since it is larger than the sum of its proper divisors (24046243079).

120231215365 is an equidigital number, since it uses as much as digits as its factorization.

120231215365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24046243078.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 120231215365 its reverse (563512132021), we get a palindrome (683743347386).

The spelling of 120231215365 in words is "one hundred twenty billion, two hundred thirty-one million, two hundred fifteen thousand, three hundred sixty-five".