203212123123 has 8 divisors (see below), whose sum is σ = 212075578368. Its totient is φ = 194351013384.

The previous prime is 203212123073. The next prime is 203212123129. The reversal of 203212123123 is 321321212302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203212123123 is a prime.

It is a super-2 number, since 2×203212123123² (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 = 203212123094 and 203212123103.

It is not an unprimeable number, because it can be changed into a prime (203212123129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408165 + ... + 756982.

It is an arithmetic number, because the mean of its divisors is an integer number (26509447296).

Almost surely, 2^203212123123 is an apocalyptic number.

203212123123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203212123123 is a deficient number, since it is larger than the sum of its proper divisors (8863455245).

203212123123 is a wasteful number, since it uses less digits than its factorization.

203212123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172753.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 203212123123 its reverse (321321212302), we get a palindrome (524533335425).

The spelling of 203212123123 in words is "two hundred three billion, two hundred twelve million, one hundred twenty-three thousand, one hundred twenty-three".