102021102 has 24 divisors (see below), whose sum is σ = 221247936. Its totient is φ = 33975936.

The previous prime is 102021091. The next prime is 102021109. The reversal of 102021102 is 201120201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 26398 + ... + 30014.

It is an arithmetic number, because the mean of its divisors is an integer number (9218664).

Almost surely, 2^102021102 is an apocalyptic number.

102021102 is an abundant number, since it is smaller than the sum of its proper divisors (119226834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021102 is a wasteful number, since it uses less digits than its factorization.

102021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192 (or 5189 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 102021102 is about 10100.5495890075. The cubic root of 102021102 is about 467.2650913592.

Adding to 102021102 its reverse (201120201), we get a palindrome (303141303).

Subtracting 102021102 from its reverse (201120201), we obtain a palindrome (99099099).

It can be divided in two parts, 1020 and 21102, that added together give a palindrome (22122).

The spelling of 102021102 in words is "one hundred two million, twenty-one thousand, one hundred two".