123311202212 has 48 divisors (see below), whose sum is σ = 236006749440. Its totient is φ = 55909207200.

The previous prime is 123311202169. The next prime is 123311202229. The reversal of 123311202212 is 212202113321.

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 15 ways as a sum of consecutive naturals, for example, 45551363 + ... + 45554069.

It is an arithmetic number, because the mean of its divisors is an integer number (4916807280).

Almost surely, 2^123311202212 is an apocalyptic number.

It is an amenable number.

123311202212 is a deficient number, since it is larger than the sum of its proper divisors (112695547228).

123311202212 is a wasteful number, since it uses less digits than its factorization.

123311202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4952 (or 4950 counting only the distinct ones).

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

Adding to 123311202212 its reverse (212202113321), we get a palindrome (335513315533).

It can be divided in two parts, 123311 and 202212, that added together give a palindrome (325523).

The spelling of 123311202212 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred two thousand, two hundred twelve".