121571034480 has 720 divisors, whose sum is σ = 490581172224. Its totient is φ = 26885053440.

The previous prime is 121571034451. The next prime is 121571034521. The reversal of 121571034480 is 84430175121.

121571034480 is a `hidden beast` number, since 1 + 2 + 1 + 571 + 0 + 3 + 4 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

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 143 ways as a sum of consecutive naturals, for example, 192663765 + ... + 192664395.

Almost surely, 2^121571034480 is an apocalyptic number.

121571034480 is a gapful number since it is divisible by the number (10) 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 121571034480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245290586112).

121571034480 is an abundant number, since it is smaller than the sum of its proper divisors (369010137744).

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

121571034480 is a wasteful number, since it uses less digits than its factorization.

121571034480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 121571034480 in words is "one hundred twenty-one billion, five hundred seventy-one million, thirty-four thousand, four hundred eighty".