201001020221101 has 4 divisors (see below), whose sum is σ = 201130782017500. Its totient is φ = 200871258424704.

The previous prime is 201001020221081. The next prime is 201001020221119. The reversal of 201001020221101 is 101122020100102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93316276201225 + 107684744019876 = 9660035^2 + 10377126^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001020221101 - 2⁹ = 201001020220589 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 (201001020221161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64880895876 + ... + 64880898973.

It is an arithmetic number, because the mean of its divisors is an integer number (50282695504375).

Almost surely, 2^{201001020221101} is an apocalyptic number.

It is an amenable number.

201001020221101 is a deficient number, since it is larger than the sum of its proper divisors (129761796399).

201001020221101 is a wasteful number, since it uses less digits than its factorization.

201001020221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129761796398.

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

Adding to 201001020221101 its reverse (101122020100102), we get a palindrome (302123040321203).

The spelling of 201001020221101 in words is "two hundred one trillion, one billion, twenty million, two hundred twenty-one thousand, one hundred one".