2052121 has 4 divisors (see below), whose sum is σ = 2172852. Its totient is φ = 1931392.

The previous prime is 2052119. The next prime is 2052137. The reversal of 2052121 is 1212502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1212502 = 2 ⋅606251.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 697225 = 1164^2 + 835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2052121 - 2¹ = 2052119 is a prime.

It is a super-2 number, since 2×2052121² = 8422401197282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2052181) 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, 60340 + ... + 60373.

It is an arithmetic number, because the mean of its divisors is an integer number (543213).

2^2052121 is an apocalyptic number.

It is an amenable number.

2052121 is a deficient number, since it is larger than the sum of its proper divisors (120731).

2052121 is a wasteful number, since it uses less digits than its factorization.

2052121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120730.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 2052121 is about 1432.5226001708. The cubic root of 2052121 is about 127.0772052108.

Adding to 2052121 its reverse (1212502), we get a palindrome (3264623).

The spelling of 2052121 in words is "two million, fifty-two thousand, one hundred twenty-one".