11222122121101 has 4 divisors (see below), whose sum is σ = 11882246951772. Its totient is φ = 10561997290432.

The previous prime is 11222122121099. The next prime is 11222122121113. The reversal of 11222122121101 is 10112122122211.

It is a happy number.

11222122121101 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 7229914322500 + 3992207798601 = 2688850^2 + 1998051^2 .

It is a cyclic number.

It is not a de Polignac number, because 11222122121101 - 2¹ = 11222122121099 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 (11222122121701) 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, 330062415310 + ... + 330062415343.

It is an arithmetic number, because the mean of its divisors is an integer number (2970561737943).

Almost surely, 2^{11222122121101} is an apocalyptic number.

It is an amenable number.

11222122121101 is a deficient number, since it is larger than the sum of its proper divisors (660124830671).

11222122121101 is an equidigital number, since it uses as much as digits as its factorization.

11222122121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660124830670.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222122121101 its reverse (10112122122211), we get a palindrome (21334244243312).

The spelling of 11222122121101 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred one".