11216212745 has 8 divisors (see below), whose sum is σ = 13823224584. Its totient is φ = 8730457344.

The previous prime is 11216212697. The next prime is 11216212771. The reversal of 11216212745 is 54721261211.

It can be written as a sum of positive squares in 4 ways, for example, as 1879049104 + 9337163641 = 43348^2 + 96629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11216212745 - 2¹⁴ = 11216196361 is a prime.

It is a super-2 number, since 2×11216212745² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30313904 + ... + 30314273.

It is an arithmetic number, because the mean of its divisors is an integer number (1727903073).

Almost surely, 2^11216212745 is an apocalyptic number.

It is an amenable number.

11216212745 is a deficient number, since it is larger than the sum of its proper divisors (2607011839).

11216212745 is an equidigital number, since it uses as much as digits as its factorization.

11216212745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60628219.

The product of its digits is 6720, while the sum is 32.

Adding to 11216212745 its reverse (54721261211), we get a palindrome (65937473956).

The spelling of 11216212745 in words is "eleven billion, two hundred sixteen million, two hundred twelve thousand, seven hundred forty-five".