201102001000221 has 4 divisors (see below), whose sum is σ = 268136001333632. Its totient is φ = 134068000666812.

The previous prime is 201102001000193. The next prime is 201102001000249. The reversal of 201102001000221 is 122000100201102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (201102001000193) and next prime (201102001000249).

It is not a de Polignac number, because 201102001000221 - 2¹⁹ = 201102000475933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201102001000197 and 201102001000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102001001221) 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, 33517000166701 + ... + 33517000166706.

It is an arithmetic number, because the mean of its divisors is an integer number (67034000333408).

Almost surely, 2^{201102001000221} is an apocalyptic number.

It is an amenable number.

201102001000221 is a deficient number, since it is larger than the sum of its proper divisors (67034000333411).

201102001000221 is an equidigital number, since it uses as much as digits as its factorization.

201102001000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67034000333410.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201102001000221 its reverse (122000100201102), we get a palindrome (323102101201323).

The spelling of 201102001000221 in words is "two hundred one trillion, one hundred two billion, one million, two hundred twenty-one", and thus it is an aban number.