11621171101 has 4 divisors (see below), whose sum is σ = 11634732252. Its totient is φ = 11607609952.

The previous prime is 11621171069. The next prime is 11621171119. The reversal of 11621171101 is 10117112611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10117112611 = 211 ⋅47948401.

It can be written as a sum of positive squares in 2 ways, for example, as 4603758201 + 7017412900 = 67851^2 + 83770^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621171101 - 2⁵ = 11621171069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621171171) 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, 6779290 + ... + 6781003.

It is an arithmetic number, because the mean of its divisors is an integer number (2908683063).

Almost surely, 2^11621171101 is an apocalyptic number.

It is an amenable number.

11621171101 is a deficient number, since it is larger than the sum of its proper divisors (13561151).

11621171101 is an equidigital number, since it uses as much as digits as its factorization.

11621171101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561150.

The product of its (nonzero) digits is 84, while the sum is 22.

Adding to 11621171101 its reverse (10117112611), we get a palindrome (21738283712).

The spelling of 11621171101 in words is "eleven billion, six hundred twenty-one million, one hundred seventy-one thousand, one hundred one".