10112101211221 has 12 divisors (see below), whose sum is σ = 10991732785792. Its totient is φ = 9295939816128.

The previous prime is 10112101211207. The next prime is 10112101211263. The reversal of 10112101211221 is 12211210121101.

It is not a de Polignac number, because 10112101211221 - 2⁵ = 10112101211189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10112101211195 and 10112101211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10112101211291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406847685 + ... + 406872538.

Almost surely, 2^{10112101211221} is an apocalyptic number.

It is an amenable number.

10112101211221 is a deficient number, since it is larger than the sum of its proper divisors (879631574571).

10112101211221 is an equidigital number, since it uses as much as digits as its factorization.

10112101211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813720300 (or 813720283 counting only the distinct ones).

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

Adding to 10112101211221 its reverse (12211210121101), we get a palindrome (22323311332322).

The spelling of 10112101211221 in words is "ten trillion, one hundred twelve billion, one hundred one million, two hundred eleven thousand, two hundred twenty-one".