10505544212 has 12 divisors (see below), whose sum is σ = 18386140500. Its totient is φ = 5252361216.

The previous prime is 10505544209. The next prime is 10505544221. The reversal of 10505544212 is 21244550501.

It can be written as a sum of positive squares in 2 ways, for example, as 281098756 + 10224445456 = 16766^2 + 101116^2 .

It is a super-2 number, since 2×10505544212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41087 + ... + 150662.

It is an arithmetic number, because the mean of its divisors is an integer number (1532178375).

Almost surely, 2^10505544212 is an apocalyptic number.

It is an amenable number.

10505544212 is a deficient number, since it is larger than the sum of its proper divisors (7880596288).

10505544212 is a wasteful number, since it uses less digits than its factorization.

10505544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205450 (or 205448 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 10505544212 in words is "ten billion, five hundred five million, five hundred forty-four thousand, two hundred twelve".