123121212002 has 16 divisors (see below), whose sum is σ = 192749274432. Its totient is φ = 58872504240.

The previous prime is 123121211981. The next prime is 123121212103. The reversal of 123121212002 is 200212121321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23249 + ... + 496772.

It is an arithmetic number, because the mean of its divisors is an integer number (12046829652).

Almost surely, 2^123121212002 is an apocalyptic number.

123121212002 is a deficient number, since it is larger than the sum of its proper divisors (69628062430).

123121212002 is a wasteful number, since it uses less digits than its factorization.

123121212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525193.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 123121212002 its reverse (200212121321), we get a palindrome (323333333323).

The spelling of 123121212002 in words is "one hundred twenty-three billion, one hundred twenty-one million, two hundred twelve thousand, two".