201011100101 has 12 divisors (see below), whose sum is σ = 233845116300. Its totient is φ = 172283529600.

The previous prime is 201011100071. The next prime is 201011100107. The reversal of 201011100101 is 101001110102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 160000800001 + 41010300100 = 400001^2 + 202510^2 .

It is a de Polignac number, because none of the positive numbers 2^k-201011100101 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 (201011100107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632975 + ... + 895923.

It is an arithmetic number, because the mean of its divisors is an integer number (19487093025).

Almost surely, 2^201011100101 is an apocalyptic number.

It is an amenable number.

201011100101 is a deficient number, since it is larger than the sum of its proper divisors (32834016199).

201011100101 is a wasteful number, since it uses less digits than its factorization.

201011100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278564 (or 278557 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 201011100101 its reverse (101001110102), we get a palindrome (302012210203).

The spelling of 201011100101 in words is "two hundred one billion, eleven million, one hundred thousand, one hundred one".