201001101 has 16 divisors (see below), whose sum is σ = 309264384. Its totient is φ = 113741424.

The previous prime is 201001067. The next prime is 201001109. The reversal of 201001101 is 101100102.

It is not a de Polignac number, because 201001101 - 2⁶ = 201001037 is a prime.

It is a super-3 number, since 3×201001101³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001109) 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, 44301 + ... + 48626.

It is an arithmetic number, because the mean of its divisors is an integer number (19329024).

Almost surely, 2^201001101 is an apocalyptic number.

201001101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201001101 is a deficient number, since it is larger than the sum of its proper divisors (108263283).

201001101 is a wasteful number, since it uses less digits than its factorization.

201001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93040.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 201001101 is about 14177.4857079808. The cubic root of 201001101 is about 585.7776698154. Note that the first 3 decimals are identical.

Adding to 201001101 its reverse (101100102), we get a palindrome (302101203).

Subtracting from 201001101 its reverse (101100102), we obtain a palindrome (99900999).

It can be divided in two parts, 201001 and 101, that added together give a palindrome (201102).

The spelling of 201001101 in words is "two hundred one million, one thousand, one hundred one".