11202111021121 has 4 divisors (see below), whose sum is σ = 11216909054932. Its totient is φ = 11187312987312.

The previous prime is 11202111021061. The next prime is 11202111021131. The reversal of 11202111021121 is 12112011120211.

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 2293676931121 + 8908434090000 = 1514489^2 + 2984700^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202111021121 - 2¹⁵ = 11202110988353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202111021095 and 11202111021104.

It is not an unprimeable number, because it can be changed into a prime (11202111021131) 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, 7399015770 + ... + 7399017283.

It is an arithmetic number, because the mean of its divisors is an integer number (2804227263733).

Almost surely, 2^{11202111021121} is an apocalyptic number.

It is an amenable number.

11202111021121 is a deficient number, since it is larger than the sum of its proper divisors (14798033811).

11202111021121 is an equidigital number, since it uses as much as digits as its factorization.

11202111021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14798033810.

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

Adding to 11202111021121 its reverse (12112011120211), we get a palindrome (23314122141332).

The spelling of 11202111021121 in words is "eleven trillion, two hundred two billion, one hundred eleven million, twenty-one thousand, one hundred twenty-one".