11102122221121 has 4 divisors (see below), whose sum is σ = 11102706285700. Its totient is φ = 11101538156544.

The previous prime is 11102122221107. The next prime is 11102122221137. The reversal of 11102122221121 is 12112222120111.

It is a happy number.

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 10149226066225 + 952896154896 = 3185785^2 + 976164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11102122221121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11102122221161) 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, 292003776 + ... + 292041793.

It is an arithmetic number, because the mean of its divisors is an integer number (2775676571425).

Almost surely, 2^{11102122221121} is an apocalyptic number.

It is an amenable number.

11102122221121 is a deficient number, since it is larger than the sum of its proper divisors (584064579).

11102122221121 is an equidigital number, since it uses as much as digits as its factorization.

11102122221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584064578.

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

Adding to 11102122221121 its reverse (12112222120111), we get a palindrome (23214344341232).

It can be divided in two parts, 1110212 and 2221121, that added together give a palindrome (3331333).

The spelling of 11102122221121 in words is "eleven trillion, one hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".