281190209012 has 12 divisors (see below), whose sum is σ = 492128157696. Its totient is φ = 140582163960.

The previous prime is 281190209011. The next prime is 281190209029. The reversal of 281190209012 is 210902091182.

It is a super-2 number, since 2×281190209012² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281190209011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3186164 + ... + 3273227.

It is an arithmetic number, because the mean of its divisors is an integer number (41010679808).

Almost surely, 2^281190209012 is an apocalyptic number.

It is an amenable number.

281190209012 is a deficient number, since it is larger than the sum of its proper divisors (210937948684).

281190209012 is a wasteful number, since it uses less digits than its factorization.

281190209012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6470278 (or 6470276 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 281190209012 in words is "two hundred eighty-one billion, one hundred ninety million, two hundred nine thousand, twelve".