121520480081 has 32 divisors (see below), whose sum is σ = 163615334400. Its totient is φ = 87163606080.

The previous prime is 121520480077. The next prime is 121520480083. The reversal of 121520480081 is 180084025121.

It is a cyclic number.

It is not a de Polignac number, because 121520480081 - 2² = 121520480077 is a prime.

It is a super-2 number, since 2×121520480081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121520480083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190280 + ... + 528438.

It is an arithmetic number, because the mean of its divisors is an integer number (5112979200).

Almost surely, 2^121520480081 is an apocalyptic number.

121520480081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121520480081 is a deficient number, since it is larger than the sum of its proper divisors (42094854319).

121520480081 is a wasteful number, since it uses less digits than its factorization.

121520480081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338549.

The product of its (nonzero) digits is 5120, while the sum is 32.

The spelling of 121520480081 in words is "one hundred twenty-one billion, five hundred twenty million, four hundred eighty thousand, eighty-one".