2102122111 has 8 divisors (see below), whose sum is σ = 2155953744. Its totient is φ = 2048412480.

The previous prime is 2102122103. The next prime is 2102122129. The reversal of 2102122111 is 1112212012.

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

It is not a de Polignac number, because 2102122111 - 2³ = 2102122103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102122091 and 2102122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102182111) 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, 4920 + ... + 65026.

It is an arithmetic number, because the mean of its divisors is an integer number (269494218).

Almost surely, 2^2102122111 is an apocalyptic number.

2102122111 is a deficient number, since it is larger than the sum of its proper divisors (53831633).

2102122111 is an equidigital number, since it uses as much as digits as its factorization.

2102122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61001.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2102122111 is about 45848.9052322954. The cubic root of 2102122111 is about 1281.0103739184.

Adding to 2102122111 its reverse (1112212012), we get a palindrome (3214334123).

The spelling of 2102122111 in words is "two billion, one hundred two million, one hundred twenty-two thousand, one hundred eleven".