10110001011221 has 4 divisors (see below), whose sum is σ = 10110226781100. Its totient is φ = 10109775241344.

The previous prime is 10110001011199. The next prime is 10110001011259. The reversal of 10110001011221 is 12211010001101.

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 2197847760196 + 7912153251025 = 1482514^2 + 2812855^2 .

It is a cyclic number.

It is not a de Polignac number, because 10110001011221 - 2²⁶ = 10109933902357 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 (10110006011221) 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, 112817756 + ... + 112907333.

It is an arithmetic number, because the mean of its divisors is an integer number (2527556695275).

Almost surely, 2^{10110001011221} is an apocalyptic number.

It is an amenable number.

10110001011221 is a deficient number, since it is larger than the sum of its proper divisors (225769879).

10110001011221 is an equidigital number, since it uses as much as digits as its factorization.

10110001011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225769878.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10110001011221 its reverse (12211010001101), we get a palindrome (22321011012322).

The spelling of 10110001011221 in words is "ten trillion, one hundred ten billion, one million, eleven thousand, two hundred twenty-one".