203122220123 has 32 divisors (see below), whose sum is σ = 217817994240. Its totient is φ = 189072576000.

The previous prime is 203122220117. The next prime is 203122220137. The reversal of 203122220123 is 321022221302.

It is a happy number.

It is not a de Polignac number, because 203122220123 - 2¹² = 203122216027 is a prime.

It is a super-2 number, since 2×203122220123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203122220095 and 203122220104.

It is not an unprimeable number, because it can be changed into a prime (203122220153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35365790 + ... + 35371532.

It is an arithmetic number, because the mean of its divisors is an integer number (6806812320).

Almost surely, 2^203122220123 is an apocalyptic number.

203122220123 is a deficient number, since it is larger than the sum of its proper divisors (14695774117).

203122220123 is a wasteful number, since it uses less digits than its factorization.

203122220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179.

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

Adding to 203122220123 its reverse (321022221302), we get a palindrome (524144441425).

The spelling of 203122220123 in words is "two hundred three billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-three".