10561055101 has 4 divisors (see below), whose sum is σ = 10566577692. Its totient is φ = 10555532512.

The previous prime is 10561054991. The next prime is 10561055137. The reversal of 10561055101 is 10155016501.

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 6988124025 + 3572931076 = 83595^2 + 59774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10561055101 is a prime.

It is a super-2 number, since 2×10561055101² (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 (10561055191) 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, 2758426 + ... + 2762251.

It is an arithmetic number, because the mean of its divisors is an integer number (2641644423).

Almost surely, 2^10561055101 is an apocalyptic number.

It is an amenable number.

10561055101 is a deficient number, since it is larger than the sum of its proper divisors (5522591).

10561055101 is an equidigital number, since it uses as much as digits as its factorization.

10561055101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522590.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 10561055101 in words is "ten billion, five hundred sixty-one million, fifty-five thousand, one hundred one".