121038843005 has 16 divisors (see below), whose sum is σ = 145539290160. Its totient is φ = 96636114432.

The previous prime is 121038843001. The next prime is 121038843011. The reversal of 121038843005 is 500348830121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1839208996 + 119199634009 = 42886^2 + 345253^2 .

It is a cyclic number.

It is not a de Polignac number, because 121038843005 - 2² = 121038843001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121038843001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7062707 + ... + 7079823.

It is an arithmetic number, because the mean of its divisors is an integer number (9096205635).

Almost surely, 2^121038843005 is an apocalyptic number.

It is an amenable number.

121038843005 is a deficient number, since it is larger than the sum of its proper divisors (24500447155).

121038843005 is a wasteful number, since it uses less digits than its factorization.

121038843005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19888.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 121038843005 in words is "one hundred twenty-one billion, thirty-eight million, eight hundred forty-three thousand, five".