2102011906 has 16 divisors (see below), whose sum is σ = 3352186944. Its totient is φ = 986340784.

The previous prime is 2102011889. The next prime is 2102011907. The reversal of 2102011906 is 6091102012.

It is not an unprimeable number, because it can be changed into a prime (2102011907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428656 + ... + 433531.

It is an arithmetic number, because the mean of its divisors is an integer number (209511684).

Almost surely, 2^2102011906 is an apocalyptic number.

2102011906 is a deficient number, since it is larger than the sum of its proper divisors (1250175038).

2102011906 is a wasteful number, since it uses less digits than its factorization.

2102011906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862265.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 2102011906 is about 45847.7033885014. The cubic root of 2102011906 is about 1280.9879876173.

Adding to 2102011906 its reverse (6091102012), we get a palindrome (8193113918).

The spelling of 2102011906 in words is "two billion, one hundred two million, eleven thousand, nine hundred six".