10110101021221 has 4 divisors (see below), whose sum is σ = 10110646323244. Its totient is φ = 10109555719200.

The previous prime is 10110101021177. The next prime is 10110101021227. The reversal of 10110101021221 is 12212010101101.

It is a happy number.

10110101021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 6112044785025 + 3998056236196 = 2472255^2 + 1999514^2 .

It is a cyclic number.

It is not a de Polignac number, because 10110101021221 - 2¹³ = 10110101013029 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 (10110101021227) 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, 272623200 + ... + 272660281.

It is an arithmetic number, because the mean of its divisors is an integer number (2527661580811).

Almost surely, 2^{10110101021221} is an apocalyptic number.

It is an amenable number.

10110101021221 is a deficient number, since it is larger than the sum of its proper divisors (545302023).

10110101021221 is an equidigital number, since it uses as much as digits as its factorization.

10110101021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545302022.

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

Adding to 10110101021221 its reverse (12212010101101), we get a palindrome (22322111122322).

The spelling of 10110101021221 in words is "ten trillion, one hundred ten billion, one hundred one million, twenty-one thousand, two hundred twenty-one".