102020020102 has 144 divisors (see below), whose sum is σ = 208943110656. Its totient is φ = 36552859200.

The previous prime is 102020020087. The next prime is 102020020103. The reversal of 102020020102 is 201020020201.

It is a super-2 number, since 2×102020020102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020020103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 105066477 + ... + 105067447.

It is an arithmetic number, because the mean of its divisors is an integer number (1450993824).

Almost surely, 2^102020020102 is an apocalyptic number.

102020020102 is an abundant number, since it is smaller than the sum of its proper divisors (106923090554).

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

102020020102 is a wasteful number, since it uses less digits than its factorization.

102020020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 102020020102 its reverse (201020020201), we get a palindrome (303040040303).

Subtracting 102020020102 from its reverse (201020020201), we obtain a palindrome (99000000099).

The spelling of 102020020102 in words is "one hundred two billion, twenty million, twenty thousand, one hundred two".