1122101100221 has 4 divisors (see below), whose sum is σ = 1122105566652. Its totient is φ = 1122096633792.

The previous prime is 1122101100209. The next prime is 1122101100227. The reversal of 1122101100221 is 1220011012211.

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 725667163321 + 396433936900 = 851861^2 + 629630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122101100221 - 2¹⁴ = 1122101083837 is a prime.

It is a super-2 number, since 2×1122101100221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122101100196 and 1122101100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122101100227) 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, 1832390 + ... + 2366823.

It is an arithmetic number, because the mean of its divisors is an integer number (280526391663).

Almost surely, 2^{1122101100221} is an apocalyptic number.

It is an amenable number.

1122101100221 is a deficient number, since it is larger than the sum of its proper divisors (4466431).

1122101100221 is an equidigital number, since it uses as much as digits as its factorization.

1122101100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466430.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1122101100221 its reverse (1220011012211), we get a palindrome (2342112112432).

The spelling of 1122101100221 in words is "one trillion, one hundred twenty-two billion, one hundred one million, one hundred thousand, two hundred twenty-one".