2102020002 has 48 divisors (see below), whose sum is σ = 4759829568. Its totient is φ = 669160800.

The previous prime is 2102019977. The next prime is 2102020003. The reversal of 2102020002 is 2000202012.

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 (2102020003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286593 + ... + 293835.

It is an arithmetic number, because the mean of its divisors is an integer number (99163116).

Almost surely, 2^2102020002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102020002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379914784).

2102020002 is an abundant number, since it is smaller than the sum of its proper divisors (2657809566).

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

2102020002 is a wasteful number, since it uses less digits than its factorization.

2102020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975 (or 7972 counting only the distinct ones).

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

The square root of 2102020002 is about 45847.7916807342. The cubic root of 2102020002 is about 1280.9896322108.

Adding to 2102020002 its reverse (2000202012), we get a palindrome (4102222014).

The spelling of 2102020002 in words is "two billion, one hundred two million, twenty thousand, two".