121043487069 has 6 divisors (see below), whose sum is σ = 174840592446. Its totient is φ = 80695658040.

The previous prime is 121043487049. The next prime is 121043487073. The reversal of 121043487069 is 960784340121.

121043487069 is a `hidden beast` number, since 1 + 2 + 104 + 3 + 487 + 0 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107231361444 + 13812125625 = 327462^2 + 117525^2 .

It is not a de Polignac number, because 121043487069 - 2²⁰ = 121042438493 is a prime.

It is a super-2 number, since 2×121043487069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121043487049) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6724638162 + ... + 6724638179.

It is an arithmetic number, because the mean of its divisors is an integer number (29140098741).

Almost surely, 2^121043487069 is an apocalyptic number.

It is an amenable number.

121043487069 is a deficient number, since it is larger than the sum of its proper divisors (53797105377).

121043487069 is a wasteful number, since it uses less digits than its factorization.

121043487069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13449276347 (or 13449276344 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 121043487069 in words is "one hundred twenty-one billion, forty-three million, four hundred eighty-seven thousand, sixty-nine".