203123122010 has 8 divisors (see below), whose sum is σ = 365621619636. Its totient is φ = 81249248800.

The previous prime is 203123122003. The next prime is 203123122019. The reversal of 203123122010 is 10221321302.

It can be written as a sum of positive squares in 2 ways, for example, as 202371320449 + 751801561 = 449857^2 + 27419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 203123122010.

It is not an unprimeable number, because it can be changed into a prime (203123122019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10156156091 + ... + 10156156110.

Almost surely, 2^203123122010 is an apocalyptic number.

203123122010 is a deficient number, since it is larger than the sum of its proper divisors (162498497626).

203123122010 is a wasteful number, since it uses less digits than its factorization.

203123122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20312312208.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203123122010 its reverse (10221321302), we get a palindrome (213344443312).

The spelling of 203123122010 in words is "two hundred three billion, one hundred twenty-three million, one hundred twenty-two thousand, ten".