11106220681 has 4 divisors (see below), whose sum is σ = 11216183364. Its totient is φ = 10996258000.

The previous prime is 11106220669. The next prime is 11106220691. The reversal of 11106220681 is 18602260111.

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 4571923456 + 6534297225 = 67616^2 + 80835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11106220681 - 2⁷ = 11106220553 is a prime.

It is a super-2 number, since 2×11106220681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11106220661) 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, 54981190 + ... + 54981391.

It is an arithmetic number, because the mean of its divisors is an integer number (2804045841).

Almost surely, 2^11106220681 is an apocalyptic number.

It is an amenable number.

11106220681 is a deficient number, since it is larger than the sum of its proper divisors (109962683).

11106220681 is a wasteful number, since it uses less digits than its factorization.

11106220681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109962682.

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 11106220681 its reverse (18602260111), we get a palindrome (29708480792).

The spelling of 11106220681 in words is "eleven billion, one hundred six million, two hundred twenty thousand, six hundred eighty-one".