10011222002221 has 4 divisors (see below), whose sum is σ = 10921333093344. Its totient is φ = 9101110911100.

The previous prime is 10011222002191. The next prime is 10011222002227. The reversal of 10011222002221 is 12220022211001.

It is a happy number.

10011222002221 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10011222002221 - 2³³ = 10002632067629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011222002195 and 10011222002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011222002227) 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, 455055545545 + ... + 455055545566.

It is an arithmetic number, because the mean of its divisors is an integer number (2730333273336).

Almost surely, 2^{10011222002221} is an apocalyptic number.

10011222002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011222002221 is a deficient number, since it is larger than the sum of its proper divisors (910111091123).

10011222002221 is an equidigital number, since it uses as much as digits as its factorization.

10011222002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910111091122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10011222002221 its reverse (12220022211001), we get a palindrome (22231244213222).

It can be divided in two parts, 1001 and 1222002221, that multiplied together give a palindrome (1223224223221).

The spelling of 10011222002221 in words is "ten trillion, eleven billion, two hundred twenty-two million, two thousand, two hundred twenty-one".