123551224012 has 48 divisors (see below), whose sum is σ = 221790048480. Its totient is φ = 60207763968.

The previous prime is 123551223959. The next prime is 123551224079. The reversal of 123551224012 is 210422155321.

It is a happy number.

It is a super-2 number, since 2×123551224012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8424478 + ... + 8439130.

It is an arithmetic number, because the mean of its divisors is an integer number (4620626010).

Almost surely, 2^123551224012 is an apocalyptic number.

It is an amenable number.

123551224012 is a deficient number, since it is larger than the sum of its proper divisors (98238824468).

123551224012 is a wasteful number, since it uses less digits than its factorization.

123551224012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15082 (or 15080 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 123551224012 its reverse (210422155321), we get a palindrome (333973379333).

The spelling of 123551224012 in words is "one hundred twenty-three billion, five hundred fifty-one million, two hundred twenty-four thousand, twelve".