102021100000001 has 12 divisors (see below), whose sum is σ = 126254345225472. Its totient is φ = 80719991207856.

The previous prime is 102021099999883. The next prime is 102021100000103. The reversal of 102021100000001 is 100000001120201.

It is not a de Polignac number, because 102021100000001 - 2¹⁰ = 102021099998977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021100000201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43119652241 + ... + 43119654606.

It is an arithmetic number, because the mean of its divisors is an integer number (10521195435456).

Almost surely, 2^{102021100000001} is an apocalyptic number.

It is an amenable number.

102021100000001 is a deficient number, since it is larger than the sum of its proper divisors (24233245225471).

102021100000001 is an equidigital number, since it uses as much as digits as its factorization.

102021100000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86239306880 (or 86239306867 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102021100000001 its reverse (100000001120201), we get a palindrome (202021101120202).

The spelling of 102021100000001 in words is "one hundred two trillion, twenty-one billion, one hundred million, one", and thus it is an aban number.