123211202312 has 32 divisors (see below), whose sum is σ = 252114167520. Its totient is φ = 55984813440.

The previous prime is 123211202237. The next prime is 123211202347. The reversal of 123211202312 is 213202112321.

123211202312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7718 + ... + 496469.

It is an arithmetic number, because the mean of its divisors is an integer number (7878567735).

Almost surely, 2^123211202312 is an apocalyptic number.

It is an amenable number.

123211202312 is an abundant number, since it is smaller than the sum of its proper divisors (128902965208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123211202312 is a wasteful number, since it uses less digits than its factorization.

123211202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506981 (or 506977 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123211202312 its reverse (213202112321), we get a palindrome (336413314633).

It can be divided in two parts, 123211 and 202312, that added together give a palindrome (325523).

The spelling of 123211202312 in words is "one hundred twenty-three billion, two hundred eleven million, two hundred two thousand, three hundred twelve".