10661122103 has 4 divisors (see below), whose sum is σ = 10661352240. Its totient is φ = 10660891968.

The previous prime is 10661122099. The next prime is 10661122111. The reversal of 10661122103 is 30122116601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10661122103 - 2² = 10661122099 is a prime.

It is a super-2 number, since 2×10661122103² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10661122123) 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, 18650 + ... + 147207.

It is an arithmetic number, because the mean of its divisors is an integer number (2665338060).

Almost surely, 2^10661122103 is an apocalyptic number.

10661122103 is a deficient number, since it is larger than the sum of its proper divisors (230137).

10661122103 is an equidigital number, since it uses as much as digits as its factorization.

10661122103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230136.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 10661122103 its reverse (30122116601), we get a palindrome (40783238704).

The spelling of 10661122103 in words is "ten billion, six hundred sixty-one million, one hundred twenty-two thousand, one hundred three".