2102120101 has 8 divisors (see below), whose sum is σ = 2110650624. Its totient is φ = 2093604480.

The previous prime is 2102120093. The next prime is 2102120147. The reversal of 2102120101 is 1010212012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102120101 - 2³ = 2102120093 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 (2102120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340821 + ... + 346933.

It is an arithmetic number, because the mean of its divisors is an integer number (263831328).

Almost surely, 2^2102120101 is an apocalyptic number.

It is an amenable number.

2102120101 is a deficient number, since it is larger than the sum of its proper divisors (8530523).

2102120101 is an equidigital number, since it uses as much as digits as its factorization.

2102120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2102120101 is about 45848.8833124647. The cubic root of 2102120101 is about 1281.0099656275.

Adding to 2102120101 its reverse (1010212012), we get a palindrome (3112332113).

The spelling of 2102120101 in words is "two billion, one hundred two million, one hundred twenty thousand, one hundred one".