2102100101 has 4 divisors (see below), whose sum is σ = 2105369952. Its totient is φ = 2098830252.

The previous prime is 2102100089. The next prime is 2102100103. The reversal of 2102100101 is 1010012012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102100101 - 2⁶ = 2102100037 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 (2102100103) 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, 1633961 + ... + 1635246.

It is an arithmetic number, because the mean of its divisors is an integer number (526342488).

Almost surely, 2^2102100101 is an apocalyptic number.

It is an amenable number.

2102100101 is a deficient number, since it is larger than the sum of its proper divisors (3269851).

2102100101 is an equidigital number, since it uses as much as digits as its factorization.

2102100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269850.

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

The square root of 2102100101 is about 45848.6652041256. The cubic root of 2102100101 is about 1281.0059030178.

Adding to 2102100101 its reverse (1010012012), we get a palindrome (3112112113).

The spelling of 2102100101 in words is "two billion, one hundred two million, one hundred thousand, one hundred one".