201021221102101 has 8 divisors (see below), whose sum is σ = 201068392279680. Its totient is φ = 200974051122768.

The previous prime is 201021221102003. The next prime is 201021221102173. The reversal of 201021221102101 is 101201122120102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201021221102101 - 2¹⁷ = 201021220971029 is a prime.

It is a super-2 number, since 2×201021221102101² (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 (201021221102201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396365655 + ... + 396872491.

It is an arithmetic number, because the mean of its divisors is an integer number (25133549034960).

Almost surely, 2^{201021221102101} is an apocalyptic number.

It is an amenable number.

201021221102101 is a deficient number, since it is larger than the sum of its proper divisors (47171177579).

201021221102101 is an equidigital number, since it uses as much as digits as its factorization.

201021221102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599123.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201021221102101 its reverse (101201122120102), we get a palindrome (302222343222203).

It can be divided in two parts, 201021 and 221102101, that added together give a palindrome (221303122).

The spelling of 201021221102101 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-one million, one hundred two thousand, one hundred one".