303103221012 has 36 divisors (see below), whose sum is σ = 811246857876. Its totient is φ = 95091206400.

The previous prime is 303103220989. The next prime is 303103221017. The reversal of 303103221012 is 210122301303.

303103221012 is a `hidden beast` number, since 30 + 310 + 322 + 1 + 0 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83061545616 + 220041675396 = 288204^2 + 469086^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303103221017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247632739 + ... + 247633962.

It is an arithmetic number, because the mean of its divisors is an integer number (22534634941).

Almost surely, 2^303103221012 is an apocalyptic number.

It is an amenable number.

303103221012 is an abundant number, since it is smaller than the sum of its proper divisors (508143636864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

303103221012 is a wasteful number, since it uses less digits than its factorization.

303103221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495266728 (or 495266723 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 303103221012 its reverse (210122301303), we get a palindrome (513225522315).

The spelling of 303103221012 in words is "three hundred three billion, one hundred three million, two hundred twenty-one thousand, twelve".