2105121 has 8 divisors (see below), whose sum is σ = 2928960. Its totient is φ = 1342352.

The previous prime is 2105119. The next prime is 2105141. The reversal of 2105121 is 1215012.

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 2105121 - 2¹ = 2105119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105097 and 2105106.

It is not an unprimeable number, because it can be changed into a prime (2105111) 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, 15186 + ... + 15323.

It is an arithmetic number, because the mean of its divisors is an integer number (366120).

2^2105121 is an apocalyptic number.

It is an amenable number.

2105121 is a deficient number, since it is larger than the sum of its proper divisors (823839).

2105121 is a wasteful number, since it uses less digits than its factorization.

2105121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30535.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2105121 is about 1450.9035116092. The cubic root of 2105121 is about 128.1619247927.

The spelling of 2105121 in words is "two million, one hundred five thousand, one hundred twenty-one".