121221410124 has 48 divisors (see below), whose sum is σ = 286124076000. Its totient is φ = 39939710976.

The previous prime is 121221410117. The next prime is 121221410137. The reversal of 121221410124 is 421014122121.

It is a self number, because there is not a number n which added to its sum of digits gives 121221410124.

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, 3461052 + ... + 3495900.

It is an arithmetic number, because the mean of its divisors is an integer number (5960918250).

Almost surely, 2^121221410124 is an apocalyptic number.

It is an amenable number.

121221410124 is an abundant number, since it is smaller than the sum of its proper divisors (164902665876).

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

121221410124 is a wasteful number, since it uses less digits than its factorization.

121221410124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38202 (or 38200 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121221410124 its reverse (421014122121), we get a palindrome (542235532245).

The spelling of 121221410124 in words is "one hundred twenty-one billion, two hundred twenty-one million, four hundred ten thousand, one hundred twenty-four".