123212123122 has 16 divisors (see below), whose sum is σ = 202733766144. Its totient is φ = 55696086000.

The previous prime is 123212123093. The next prime is 123212123137. The reversal of 123212123122 is 221321212321.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 123212123093 and 123212123102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15467154 + ... + 15475117.

It is an arithmetic number, because the mean of its divisors is an integer number (12670860384).

Almost surely, 2^123212123122 is an apocalyptic number.

123212123122 is a deficient number, since it is larger than the sum of its proper divisors (79521643022).

123212123122 is a wasteful number, since it uses less digits than its factorization.

123212123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30942465.

The product of its digits is 576, while the sum is 22.

Adding to 123212123122 its reverse (221321212321), we get a palindrome (344533335443).

The spelling of 123212123122 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred twenty-three thousand, one hundred twenty-two".