102111020121 has 8 divisors (see below), whose sum is σ = 148525120224. Its totient is φ = 61885466720.

The previous prime is 102111020107. The next prime is 102111020171. The reversal of 102111020121 is 121020111201.

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

It is not a de Polignac number, because 102111020121 - 2¹¹ = 102111018073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102111020097 and 102111020106.

It is not an unprimeable number, because it can be changed into a prime (102111020101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547136636 + ... + 1547136701.

It is an arithmetic number, because the mean of its divisors is an integer number (18565640028).

Almost surely, 2^102111020121 is an apocalyptic number.

102111020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102111020121 is a deficient number, since it is larger than the sum of its proper divisors (46414100103).

102111020121 is a wasteful number, since it uses less digits than its factorization.

102111020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094273351.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102111020121 its reverse (121020111201), we get a palindrome (223131131322).

The spelling of 102111020121 in words is "one hundred two billion, one hundred eleven million, twenty thousand, one hundred twenty-one".