2102101002 has 12 divisors (see below), whose sum is σ = 4554552210. Its totient is φ = 700700328.

The previous prime is 2102100997. The next prime is 2102101003. The reversal of 2102101002 is 2001012012.

It can be written as a sum of positive squares in only one way, i.e., 1364489721 + 737611281 = 36939^2 + 27159^2 .

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 (2102101003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58391677 + ... + 58391712.

Almost surely, 2^2102101002 is an apocalyptic number.

2102101002 is an abundant number, since it is smaller than the sum of its proper divisors (2452451208).

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

2102101002 is a wasteful number, since it uses less digits than its factorization.

2102101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116783397 (or 116783394 counting only the distinct ones).

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

The square root of 2102101002 is about 45848.6750299286. The cubic root of 2102101002 is about 1281.0060860389.

Adding to 2102101002 its reverse (2001012012), we get a palindrome (4103113014).

The spelling of 2102101002 in words is "two billion, one hundred two million, one hundred one thousand, two".