2002109101 has 4 divisors (see below), whose sum is σ = 2005175772. Its totient is φ = 1999042432.

The previous prime is 2002109099. The next prime is 2002109113. The reversal of 2002109101 is 1019012002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1019012002 = 2 ⋅509506001.

It can be written as a sum of positive squares in 2 ways, for example, as 1479940900 + 522168201 = 38470^2 + 22851^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002109101 - 2¹ = 2002109099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072109101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532356 + ... + 1533661.

It is an arithmetic number, because the mean of its divisors is an integer number (501293943).

Almost surely, 2^2002109101 is an apocalyptic number.

It is an amenable number.

2002109101 is a deficient number, since it is larger than the sum of its proper divisors (3066671).

2002109101 is an equidigital number, since it uses as much as digits as its factorization.

2002109101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066670.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 2002109101 is about 44744.9338026105. The cubic root of 2002109101 is about 1260.3637777627.

The spelling of 2002109101 in words is "two billion, two million, one hundred nine thousand, one hundred one".