102021107 has 4 divisors (see below), whose sum is σ = 103458096. Its totient is φ = 100584120.

The previous prime is 102021091. The next prime is 102021109. The reversal of 102021107 is 701120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021107 - 2⁴ = 102021091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021091 and 102021100.

It is not an unprimeable number, because it can be changed into a prime (102021109) 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, 718388 + ... + 718529.

It is an arithmetic number, because the mean of its divisors is an integer number (25864524).

Almost surely, 2^102021107 is an apocalyptic number.

102021107 is a deficient number, since it is larger than the sum of its proper divisors (1436989).

102021107 is an equidigital number, since it uses as much as digits as its factorization.

102021107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436988.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 102021107 is about 10100.5498365188. The cubic root of 102021107 is about 467.2650989927.

Adding to 102021107 its reverse (701120201), we get a palindrome (803141308).

The spelling of 102021107 in words is "one hundred two million, twenty-one thousand, one hundred seven".