2102210101 has 4 divisors (see below), whose sum is σ = 2151098752. Its totient is φ = 2053321452.

The previous prime is 2102210069. The next prime is 2102210111. The reversal of 2102210101 is 1010122012.

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 2102210101 - 2⁵ = 2102210069 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 (2102210111) 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, 24444261 + ... + 24444346.

It is an arithmetic number, because the mean of its divisors is an integer number (537774688).

Almost surely, 2^2102210101 is an apocalyptic number.

It is an amenable number.

2102210101 is a deficient number, since it is larger than the sum of its proper divisors (48888651).

2102210101 is an equidigital number, since it uses as much as digits as its factorization.

2102210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48888650.

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

The square root of 2102210101 is about 45849.8647871507. The cubic root of 2102210101 is about 1281.0282470523.

Adding to 2102210101 its reverse (1010122012), we get a palindrome (3112332113).

The spelling of 2102210101 in words is "two billion, one hundred two million, two hundred ten thousand, one hundred one".