201121060541 has 4 divisors (see below), whose sum is σ = 201557332284. Its totient is φ = 200684788800.

The previous prime is 201121060499. The next prime is 201121060573. The reversal of 201121060541 is 145060121102.

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 62125562500 + 138995498041 = 249250^2 + 372821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201121060541 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 (201121060741) 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, 218135180 + ... + 218136101.

It is an arithmetic number, because the mean of its divisors is an integer number (50389333071).

Almost surely, 2^201121060541 is an apocalyptic number.

It is an amenable number.

201121060541 is a deficient number, since it is larger than the sum of its proper divisors (436271743).

201121060541 is an equidigital number, since it uses as much as digits as its factorization.

201121060541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436271742.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 201121060541 its reverse (145060121102), we get a palindrome (346181181643).

The spelling of 201121060541 in words is "two hundred one billion, one hundred twenty-one million, sixty thousand, five hundred forty-one".