2101100012 has 24 divisors (see below), whose sum is σ = 4012458240. Its totient is φ = 954743760.

The previous prime is 2101100011. The next prime is 2101100059. The reversal of 2101100012 is 2100011012.

It is not an unprimeable number, because it can be changed into a prime (2101100011) 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, 193553 + ... + 204119.

It is an arithmetic number, because the mean of its divisors is an integer number (167185760).

Almost surely, 2^2101100012 is an apocalyptic number.

2101100012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2101100012 is a deficient number, since it is larger than the sum of its proper divisors (1911358228).

2101100012 is a wasteful number, since it uses less digits than its factorization.

2101100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15101 (or 15099 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2101100012 is about 45837.7574931410. The cubic root of 2101100012 is about 1280.8027215847.

Adding to 2101100012 its reverse (2100011012), we get a palindrome (4201111024).

It can be divided in two parts, 21011000 and 12, that added together give a palindrome (21011012).

The spelling of 2101100012 in words is "two billion, one hundred one million, one hundred thousand, twelve".