201001101020221 has 16 divisors (see below), whose sum is σ = 214203839238144. Its totient is φ = 188170364354544.

The previous prime is 201001101020171. The next prime is 201001101020249. The reversal of 201001101020221 is 122020101100102.

It is not a de Polignac number, because 201001101020221 - 2⁹ = 201001101019709 is a prime.

It is a super-2 number, since 2×201001101020221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001101020261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412792726 + ... + 413279368.

It is an arithmetic number, because the mean of its divisors is an integer number (13387739952384).

Almost surely, 2^{201001101020221} is an apocalyptic number.

It is an amenable number.

201001101020221 is a deficient number, since it is larger than the sum of its proper divisors (13202738217923).

201001101020221 is a wasteful number, since it uses less digits than its factorization.

201001101020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868800.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201001101020221 its reverse (122020101100102), we get a palindrome (323021202120323).

The spelling of 201001101020221 in words is "two hundred one trillion, one billion, one hundred one million, twenty thousand, two hundred twenty-one".