121704183612 has 384 divisors, whose sum is σ = 379717632000. Its totient is φ = 33275784960.

The previous prime is 121704183599. The next prime is 121704183619. The reversal of 121704183612 is 216381407121.

121704183612 is a `hidden beast` number, since 1 + 21 + 7 + 0 + 4 + 18 + 3 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121704183619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 186376678 + ... + 186377330.

It is an arithmetic number, because the mean of its divisors is an integer number (988848000).

Almost surely, 2^121704183612 is an apocalyptic number.

121704183612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121704183612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189858816000).

121704183612 is an abundant number, since it is smaller than the sum of its proper divisors (258013448388).

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

121704183612 is a wasteful number, since it uses less digits than its factorization.

121704183612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078 (or 1070 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 121704183612 in words is "one hundred twenty-one billion, seven hundred four million, one hundred eighty-three thousand, six hundred twelve".