102120112020121 has 8 divisors (see below), whose sum is σ = 111064371642504. Its totient is φ = 93331404739200.

The previous prime is 102120112020023. The next prime is 102120112020169. The reversal of 102120112020121 is 121020211021201.

It can be written as a sum of positive squares in 4 ways, for example, as 32319099930121 + 69801012090000 = 5684989^2 + 8354700^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 102120112020121 - 2⁷ = 102120112019993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120112020095 and 102120112020104.

It is not an unprimeable number, because it can be changed into a prime (102120112020181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38888083996 + ... + 38888086621.

It is an arithmetic number, because the mean of its divisors is an integer number (13883046455313).

Almost surely, 2^{102120112020121} is an apocalyptic number.

It is an amenable number.

102120112020121 is a deficient number, since it is larger than the sum of its proper divisors (8944259622383).

102120112020121 is a wasteful number, since it uses less digits than its factorization.

102120112020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77776170731.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102120112020121 its reverse (121020211021201), we get a palindrome (223140323041322).

The spelling of 102120112020121 in words is "one hundred two trillion, one hundred twenty billion, one hundred twelve million, twenty thousand, one hundred twenty-one".