2106285121 has 4 divisors (see below), whose sum is σ = 2111932372. Its totient is φ = 2100637872.

The previous prime is 2106285101. The next prime is 2106285143. The reversal of 2106285121 is 1215826012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 747256896 + 1359028225 = 27336^2 + 36865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106285121 - 2¹³ = 2106276929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106285121.

It is not an unprimeable number, because it can be changed into a prime (2106285101) 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, 2823066 + ... + 2823811.

It is an arithmetic number, because the mean of its divisors is an integer number (527983093).

Almost surely, 2^2106285121 is an apocalyptic number.

It is an amenable number.

2106285121 is a deficient number, since it is larger than the sum of its proper divisors (5647251).

2106285121 is an equidigital number, since it uses as much as digits as its factorization.

2106285121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647250.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 2106285121 is about 45894.2820076750. The cubic root of 2106285121 is about 1281.8554473272.

The spelling of 2106285121 in words is "two billion, one hundred six million, two hundred eighty-five thousand, one hundred twenty-one".