11212068121 has 4 divisors (see below), whose sum is σ = 11213488692. Its totient is φ = 11210647552.

The previous prime is 11212068113. The next prime is 11212068137. The reversal of 11212068121 is 12186021211.

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 10380553225 + 831514896 = 101885^2 + 28836^2 .

It is a cyclic number.

It is not a de Polignac number, because 11212068121 - 2³ = 11212068113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212068181) 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, 698380 + ... + 714253.

It is an arithmetic number, because the mean of its divisors is an integer number (2803372173).

Almost surely, 2^11212068121 is an apocalyptic number.

It is an amenable number.

11212068121 is a deficient number, since it is larger than the sum of its proper divisors (1420571).

11212068121 is an equidigital number, since it uses as much as digits as its factorization.

11212068121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420570.

The product of its (nonzero) digits is 384, while the sum is 25.

Adding to 11212068121 its reverse (12186021211), we get a palindrome (23398089332).

The spelling of 11212068121 in words is "eleven billion, two hundred twelve million, sixty-eight thousand, one hundred twenty-one".