201520541122 has 8 divisors (see below), whose sum is σ = 302579216316. Its totient is φ = 100660802352.

The previous prime is 201520541113. The next prime is 201520541147. The reversal of 201520541122 is 221145025102.

It can be written as a sum of positive squares in 2 ways, for example, as 161731861281 + 39788679841 = 402159^2 + 199471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×201520541122³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49731573 + ... + 49735624.

Almost surely, 2^201520541122 is an apocalyptic number.

201520541122 is a deficient number, since it is larger than the sum of its proper divisors (101058675194).

201520541122 is a wasteful number, since it uses less digits than its factorization.

201520541122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99468212.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 201520541122 its reverse (221145025102), we get a palindrome (422665566224).

The spelling of 201520541122 in words is "two hundred one billion, five hundred twenty million, five hundred forty-one thousand, one hundred twenty-two".