121036139128771 has 8 divisors (see below), whose sum is σ = 123283765008144. Its totient is φ = 118797010890720.

The previous prime is 121036139128757. The next prime is 121036139128799. The reversal of 121036139128771 is 177821931630121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121036139128771 - 2⁹ = 121036139128259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121036139108771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124381580 + ... + 2124438553.

It is an arithmetic number, because the mean of its divisors is an integer number (15410470626018).

Almost surely, 2^{121036139128771} is an apocalyptic number.

121036139128771 is a deficient number, since it is larger than the sum of its proper divisors (2247625879373).

121036139128771 is an equidigital number, since it uses as much as digits as its factorization.

121036139128771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248820661.

The product of its (nonzero) digits is 762048, while the sum is 52.

The spelling of 121036139128771 in words is "one hundred twenty-one trillion, thirty-six billion, one hundred thirty-nine million, one hundred twenty-eight thousand, seven hundred seventy-one".