102020020121 has 8 divisors (see below), whose sum is σ = 105862361088. Its totient is φ = 98212140000.

The previous prime is 102020020103. The next prime is 102020020133. The reversal of 102020020121 is 121020020201.

It is a happy number.

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 102020020121 - 2²² = 102015825817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020020021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8609180 + ... + 8621021.

It is an arithmetic number, because the mean of its divisors is an integer number (13232795136).

Almost surely, 2^102020020121 is an apocalyptic number.

It is an amenable number.

102020020121 is a deficient number, since it is larger than the sum of its proper divisors (3842340967).

102020020121 is a wasteful number, since it uses less digits than its factorization.

102020020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17230423.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102020020121 its reverse (121020020201), we get a palindrome (223040040322).

The spelling of 102020020121 in words is "one hundred two billion, twenty million, twenty thousand, one hundred twenty-one".