121965040271 has 4 divisors (see below), whose sum is σ = 121993166592. Its totient is φ = 121936913952.

The previous prime is 121965040259. The next prime is 121965040273. The reversal of 121965040271 is 172040569121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121965040271 - 2¹⁰ = 121965039247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121965040273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14056655 + ... + 14065328.

It is an arithmetic number, because the mean of its divisors is an integer number (30498291648).

Almost surely, 2^121965040271 is an apocalyptic number.

121965040271 is a deficient number, since it is larger than the sum of its proper divisors (28126321).

121965040271 is an equidigital number, since it uses as much as digits as its factorization.

121965040271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28126320.

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 121965040271 in words is "one hundred twenty-one billion, nine hundred sixty-five million, forty thousand, two hundred seventy-one".