201016641 has 16 divisors (see below), whose sum is σ = 307904384. Its totient is φ = 114269184.

The previous prime is 201016639. The next prime is 201016663. The reversal of 201016641 is 146610102.

It is not a de Polignac number, because 201016641 - 2¹ = 201016639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201016141) 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, 20746 + ... + 28851.

It is an arithmetic number, because the mean of its divisors is an integer number (19244024).

Almost surely, 2^201016641 is an apocalyptic number.

201016641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201016641 is a deficient number, since it is larger than the sum of its proper divisors (106887743).

201016641 is a wasteful number, since it uses less digits than its factorization.

201016641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49800.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 201016641 is about 14178.0337494308. The cubic root of 201016641 is about 585.7927655045.

Adding to 201016641 its reverse (146610102), we get a palindrome (347626743).

The spelling of 201016641 in words is "two hundred one million, sixteen thousand, six hundred forty-one".