121755372263 has 8 divisors (see below), whose sum is σ = 139214929920. Its totient is φ = 104312297880.

The previous prime is 121755372259. The next prime is 121755372287. The reversal of 121755372263 is 362273557121.

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

It is not a de Polignac number, because 121755372263 - 2² = 121755372259 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 (121755372293) 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, 4104983 + ... + 4134536.

It is an arithmetic number, because the mean of its divisors is an integer number (17401866240).

Almost surely, 2^121755372263 is an apocalyptic number.

121755372263 is a deficient number, since it is larger than the sum of its proper divisors (17459557657).

121755372263 is an equidigital number, since it uses as much as digits as its factorization.

121755372263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241637.

The product of its digits is 529200, while the sum is 44.

The spelling of 121755372263 in words is "one hundred twenty-one billion, seven hundred fifty-five million, three hundred seventy-two thousand, two hundred sixty-three".