102021120101 has 4 divisors (see below), whose sum is σ = 102024669600. Its totient is φ = 102017570604.

The previous prime is 102021120083. The next prime is 102021120121. The reversal of 102021120101 is 101021120201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101021120201 = 41 ⋅2463929761.

It is a cyclic number.

It is not a de Polignac number, because 102021120101 - 2¹⁸ = 102020857957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021120121) 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, 1731281 + ... + 1789238.

It is an arithmetic number, because the mean of its divisors is an integer number (25506167400).

Almost surely, 2^102021120101 is an apocalyptic number.

It is an amenable number.

102021120101 is a deficient number, since it is larger than the sum of its proper divisors (3549499).

102021120101 is an equidigital number, since it uses as much as digits as its factorization.

102021120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549498.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102021120101 its reverse (101021120201), we get a palindrome (203042240302).

The spelling of 102021120101 in words is "one hundred two billion, twenty-one million, one hundred twenty thousand, one hundred one".