201044540121 has 16 divisors (see below), whose sum is σ = 277928832960. Its totient is φ = 129115837760.

The previous prime is 201044540119. The next prime is 201044540131. The reversal of 201044540121 is 121045440102.

It is a cyclic number.

It is not a de Polignac number, because 201044540121 - 2¹ = 201044540119 is a prime.

It is a super-2 number, since 2×201044540121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201044540091 and 201044540100.

It is not an unprimeable number, because it can be changed into a prime (201044540131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2569650 + ... + 2646731.

It is an arithmetic number, because the mean of its divisors is an integer number (17370552060).

Almost surely, 2^201044540121 is an apocalyptic number.

It is an amenable number.

201044540121 is a deficient number, since it is larger than the sum of its proper divisors (76884292839).

201044540121 is a wasteful number, since it uses less digits than its factorization.

201044540121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216856.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 201044540121 its reverse (121045440102), we get a palindrome (322089980223).

The spelling of 201044540121 in words is "two hundred one billion, forty-four million, five hundred forty thousand, one hundred twenty-one".