275221012 has 24 divisors (see below), whose sum is σ = 526230432. Its totient is φ = 124908000.

The previous prime is 275221003. The next prime is 275221033. The reversal of 275221012 is 210122572.

275221012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26383 + ... + 35305.

It is an arithmetic number, because the mean of its divisors is an integer number (21926268).

Almost surely, 2^275221012 is an apocalyptic number.

275221012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

275221012 is a deficient number, since it is larger than the sum of its proper divisors (251009420).

275221012 is a wasteful number, since it uses less digits than its factorization.

275221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639 (or 9637 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 275221012 is about 16589.7863759604. The cubic root of 275221012 is about 650.4698866659.

Adding to 275221012 its reverse (210122572), we get a palindrome (485343584).

The spelling of 275221012 in words is "two hundred seventy-five million, two hundred twenty-one thousand, twelve".