2161335744121 has 8 divisors (see below), whose sum is σ = 2290718962080. Its totient is φ = 2032202061888.

The previous prime is 2161335744101. The next prime is 2161335744133. The reversal of 2161335744121 is 1214475331612.

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 2161335744121 - 2⁵ = 2161335744089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161335744101) 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, 62366091 + ... + 62400736.

It is an arithmetic number, because the mean of its divisors is an integer number (286339870260).

Almost surely, 2^{2161335744121} is an apocalyptic number.

It is an amenable number.

2161335744121 is a deficient number, since it is larger than the sum of its proper divisors (129383217959).

2161335744121 is a wasteful number, since it uses less digits than its factorization.

2161335744121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124767863.

The product of its digits is 120960, while the sum is 40.

The spelling of 2161335744121 in words is "two trillion, one hundred sixty-one billion, three hundred thirty-five million, seven hundred forty-four thousand, one hundred twenty-one".