121181478822612 has 576 divisors, whose sum is σ = 348834336480000. Its totient is φ = 36354570190848.

The previous prime is 121181478822553. The next prime is 121181478822659. The reversal of 121181478822612 is 216228874181121.

121181478822612 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 8 + 14 + 7 + 8 + 8 + 2 + 2 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 45065628564 + ... + 45065631252.

It is an arithmetic number, because the mean of its divisors is an integer number (605615167500).

Almost surely, 2^{121181478822612} is an apocalyptic number.

121181478822612 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 121181478822612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174417168240000).

121181478822612 is an abundant number, since it is smaller than the sum of its proper divisors (227652857657388).

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

121181478822612 is a wasteful number, since it uses less digits than its factorization.

121181478822612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177 (or 3156 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 54.

The spelling of 121181478822612 in words is "one hundred twenty-one trillion, one hundred eighty-one billion, four hundred seventy-eight million, eight hundred twenty-two thousand, six hundred twelve".