10101201110221 has 4 divisors (see below), whose sum is σ = 10878216580252. Its totient is φ = 9324185640192.

The previous prime is 10101201110201. The next prime is 10101201110233. The reversal of 10101201110221 is 12201110210101.

It is a happy number.

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 5068738920996 + 5032462189225 = 2251386^2 + 2243315^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101201110221 - 2³⁹ = 9551445296333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 777015470017 = 10101201110221 / (1 + 0 + 1 + 0 + 1 + 2 + 0 + 1 + 1 + 1 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101201110201) 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, 388507734996 + ... + 388507735021.

It is an arithmetic number, because the mean of its divisors is an integer number (2719554145063).

Almost surely, 2^{10101201110221} is an apocalyptic number.

It is an amenable number.

10101201110221 is a deficient number, since it is larger than the sum of its proper divisors (777015470031).

10101201110221 is an equidigital number, since it uses as much as digits as its factorization.

10101201110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777015470030.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10101201110221 its reverse (12201110210101), we get a palindrome (22302311320322).

The spelling of 10101201110221 in words is "ten trillion, one hundred one billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".