203123102222 has 4 divisors (see below), whose sum is σ = 304684653336. Its totient is φ = 101561551110.

The previous prime is 203123102213. The next prime is 203123102227. The reversal of 203123102222 is 222201321302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×203123102222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203123102194 and 203123102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123102227) 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 as a sum of consecutive naturals, namely, 50780775554 + ... + 50780775557.

It is an arithmetic number, because the mean of its divisors is an integer number (76171163334).

Almost surely, 2^203123102222 is an apocalyptic number.

203123102222 is a deficient number, since it is larger than the sum of its proper divisors (101561551114).

203123102222 is a wasteful number, since it uses less digits than its factorization.

203123102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101561551113.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 203123102222 its reverse (222201321302), we get a palindrome (425324423524).

The spelling of 203123102222 in words is "two hundred three billion, one hundred twenty-three million, one hundred two thousand, two hundred twenty-two".