121052455065 has 12 divisors (see below), whose sum is σ = 209824255524. Its totient is φ = 64561309344.

The previous prime is 121052455063. The next prime is 121052455103. The reversal of 121052455065 is 560554250121.

121052455065 is a `hidden beast` number, since 1 + 2 + 105 + 2 + 45 + 506 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 64768214016 + 56284241049 = 254496^2 + 237243^2 .

It is not a de Polignac number, because 121052455065 - 2¹ = 121052455063 is a prime.

It is a super-3 number, since 3×121052455065³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121052455061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1345027234 + ... + 1345027323.

It is an arithmetic number, because the mean of its divisors is an integer number (17485354627).

Almost surely, 2^121052455065 is an apocalyptic number.

121052455065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121052455065 is a deficient number, since it is larger than the sum of its proper divisors (88771800459).

121052455065 is a wasteful number, since it uses less digits than its factorization.

121052455065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690054568 (or 2690054565 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 121052455065 in words is "one hundred twenty-one billion, fifty-two million, four hundred fifty-five thousand, sixty-five".