102020102 has 4 divisors (see below), whose sum is σ = 153030156. Its totient is φ = 51010050.

The previous prime is 102020099. The next prime is 102020119. The reversal of 102020102 is 201020201.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102020102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25505024 + ... + 25505027.

It is an arithmetic number, because the mean of its divisors is an integer number (38257539).

Almost surely, 2^102020102 is an apocalyptic number.

102020102 is a deficient number, since it is larger than the sum of its proper divisors (51010054).

102020102 is an equidigital number, since it uses as much as digits as its factorization.

102020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51010053.

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

The square root of 102020102 is about 10100.5000866294. The cubic root of 102020102 is about 467.2635646599.

Adding to 102020102 its reverse (201020201), we get a palindrome (303040303).

Subtracting 102020102 from its reverse (201020201), we obtain a palindrome (99000099).

The spelling of 102020102 in words is "one hundred two million, twenty thousand, one hundred two".