201011321001 has 16 divisors (see below), whose sum is σ = 283795869888. Its totient is φ = 126118003200.

The previous prime is 201011320997. The next prime is 201011321011. The reversal of 201011321001 is 100123110102.

It is not a de Polignac number, because 201011321001 - 2² = 201011320997 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201011321011) 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, 962221 + ... + 1152341.

It is an arithmetic number, because the mean of its divisors is an integer number (17737241868).

Almost surely, 2^201011321001 is an apocalyptic number.

It is an amenable number.

201011321001 is a deficient number, since it is larger than the sum of its proper divisors (82784548887).

201011321001 is a wasteful number, since it uses less digits than its factorization.

201011321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210872.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 201011321001 its reverse (100123110102), we get a palindrome (301134431103).

The spelling of 201011321001 in words is "two hundred one billion, eleven million, three hundred twenty-one thousand, one".