203122301212 has 12 divisors (see below), whose sum is σ = 361488841560. Its totient is φ = 99839775056.

The previous prime is 203122301209. The next prime is 203122301219. The reversal of 203122301212 is 212103221302.

It is a self number, because there is not a number n which added to its sum of digits gives 203122301212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203122301219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430343623 + ... + 430344094.

It is an arithmetic number, because the mean of its divisors is an integer number (30124070130).

Almost surely, 2^203122301212 is an apocalyptic number.

It is an amenable number.

203122301212 is a deficient number, since it is larger than the sum of its proper divisors (158366540348).

203122301212 is a wasteful number, since it uses less digits than its factorization.

203122301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860687780 (or 860687778 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 203122301212 its reverse (212103221302), we get a palindrome (415225522514).

The spelling of 203122301212 in words is "two hundred three billion, one hundred twenty-two million, three hundred one thousand, two hundred twelve".