102120000121 has 4 divisors (see below), whose sum is σ = 102258187600. Its totient is φ = 101981812644.

The previous prime is 102120000113. The next prime is 102120000139. The reversal of 102120000121 is 121000021201.

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 102120000121 - 2³ = 102120000113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120000098 and 102120000107.

It is not an unprimeable number, because it can be changed into a prime (102120000181) 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, 69092631 + ... + 69094108.

It is an arithmetic number, because the mean of its divisors is an integer number (25564546900).

Almost surely, 2^102120000121 is an apocalyptic number.

It is an amenable number.

102120000121 is a deficient number, since it is larger than the sum of its proper divisors (138187479).

102120000121 is an equidigital number, since it uses as much as digits as its factorization.

102120000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138187478.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102120000121 its reverse (121000021201), we get a palindrome (223120021322).

The spelling of 102120000121 in words is "one hundred two billion, one hundred twenty million, one hundred twenty-one", and thus it is an aban number.