102020020002 has 24 divisors (see below), whose sum is σ = 221060327436. Its totient is φ = 34004065536.

The previous prime is 102020020001. The next prime is 102020020019. The reversal of 102020020002 is 200020020201.

It can be written as a sum of positive squares in 2 ways, for example, as 93227019561 + 8793000441 = 305331^2 + 93771^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102020020001) 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, 31638 + ... + 452814.

Almost surely, 2^102020020002 is an apocalyptic number.

102020020002 is an abundant number, since it is smaller than the sum of its proper divisors (119040307434).

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

102020020002 is a wasteful number, since it uses less digits than its factorization.

102020020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434642 (or 434639 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 102020020002 its reverse (200020020201), we get a palindrome (302040040203).

The spelling of 102020020002 in words is "one hundred two billion, twenty million, twenty thousand, two".