121706675151621 has 8 divisors (see below), whose sum is σ = 185457790707264. Its totient is φ = 69546671515200.

The previous prime is 121706675151587. The next prime is 121706675151661. The reversal of 121706675151621 is 126151576607121.

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

It is not a de Polignac number, because 121706675151621 - 2⁹ = 121706675151109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121706675151661) 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, 2897777979780 + ... + 2897777979821.

It is an arithmetic number, because the mean of its divisors is an integer number (23182223838408).

Almost surely, 2^{121706675151621} is an apocalyptic number.

It is an amenable number.

121706675151621 is a deficient number, since it is larger than the sum of its proper divisors (63751115555643).

121706675151621 is an equidigital number, since it uses as much as digits as its factorization.

121706675151621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795555959611.

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 121706675151621 in words is "one hundred twenty-one trillion, seven hundred six billion, six hundred seventy-five million, one hundred fifty-one thousand, six hundred twenty-one".