8121218750101 has 4 divisors (see below), whose sum is σ = 8121673712704. Its totient is φ = 8120763787500.

The previous prime is 8121218750077. The next prime is 8121218750179. The reversal of 8121218750101 is 1010578121218.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8121218750101 - 2⁵ = 8121218750069 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 (8121218750401) 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, 227454525 + ... + 227490226.

It is an arithmetic number, because the mean of its divisors is an integer number (2030418428176).

Almost surely, 2^{8121218750101} is an apocalyptic number.

It is an amenable number.

8121218750101 is a deficient number, since it is larger than the sum of its proper divisors (454962603).

8121218750101 is a wasteful number, since it uses less digits than its factorization.

8121218750101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454962602.

The product of its (nonzero) digits is 8960, while the sum is 37.

The spelling of 8121218750101 in words is "eight trillion, one hundred twenty-one billion, two hundred eighteen million, seven hundred fifty thousand, one hundred one".