123113212203 has 16 divisors (see below), whose sum is σ = 175133667456. Its totient is φ = 76657825920.

The previous prime is 123113212177. The next prime is 123113212213. The reversal of 123113212203 is 302212311321.

It is not a de Polignac number, because 123113212203 - 2¹⁴ = 123113195819 is a prime.

It is a super-2 number, since 2×123113212203² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123113212203.

It is not an unprimeable number, because it can be changed into a prime (123113212213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9207001 + ... + 9220362.

It is an arithmetic number, because the mean of its divisors is an integer number (10945854216).

Almost surely, 2^123113212203 is an apocalyptic number.

123113212203 is a deficient number, since it is larger than the sum of its proper divisors (52020455253).

123113212203 is a wasteful number, since it uses less digits than its factorization.

123113212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18427514.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123113212203 its reverse (302212311321), we get a palindrome (425325523524).

The spelling of 123113212203 in words is "one hundred twenty-three billion, one hundred thirteen million, two hundred twelve thousand, two hundred three".