121671053571 has 8 divisors (see below), whose sum is σ = 162249108160. Its totient is φ = 81103517352.

The previous prime is 121671053563. The next prime is 121671053591. The reversal of 121671053571 is 175350176121.

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

It is not a de Polignac number, because 121671053571 - 2³ = 121671053563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121671053551) 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, 2602561 + ... + 2648898.

It is an arithmetic number, because the mean of its divisors is an integer number (20281138520).

Almost surely, 2^121671053571 is an apocalyptic number.

121671053571 is a deficient number, since it is larger than the sum of its proper divisors (40578054589).

121671053571 is an equidigital number, since it uses as much as digits as its factorization.

121671053571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259185.

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 121671053571 in words is "one hundred twenty-one billion, six hundred seventy-one million, fifty-three thousand, five hundred seventy-one".