120203246561 has 4 divisors (see below), whose sum is σ = 120216882324. Its totient is φ = 120189610800.

The previous prime is 120203246539. The next prime is 120203246591. The reversal of 120203246561 is 165642302021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42551850961 + 77651395600 = 206281^2 + 278660^2 .

It is a cyclic number.

It is not a de Polignac number, because 120203246561 - 2³⁰ = 119129504737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120203246531) 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, 6804650 + ... + 6822291.

It is an arithmetic number, because the mean of its divisors is an integer number (30054220581).

Almost surely, 2^120203246561 is an apocalyptic number.

It is an amenable number.

120203246561 is a deficient number, since it is larger than the sum of its proper divisors (13635763).

120203246561 is an equidigital number, since it uses as much as digits as its factorization.

120203246561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13635762.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 120203246561 its reverse (165642302021), we get a palindrome (285845548582).

The spelling of 120203246561 in words is "one hundred twenty billion, two hundred three million, two hundred forty-six thousand, five hundred sixty-one".