2512021 has 2 divisors, whose sum is σ = 2512022. Its totient is φ = 2512020.

The previous prime is 2512019. The next prime is 2512033. The reversal of 2512021 is 1202152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2002225 + 509796 = 1415^2 + 714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512021 - 2¹ = 2512019 is a prime.

Together with 2512019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2511992 and 2512010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2512001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256010 + 1256011.

It is an arithmetic number, because the mean of its divisors is an integer number (1256011).

2^2512021 is an apocalyptic number.

It is an amenable number.

2512021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512021 is an equidigital number, since it uses as much as digits as its factorization.

2512021 is an evil number, because the sum of its binary digits is even.

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

The square root of 2512021 is about 1584.9356453812. The cubic root of 2512021 is about 135.9380665234.

Adding to 2512021 its reverse (1202152), we get a palindrome (3714173).

The spelling of 2512021 in words is "two million, five hundred twelve thousand, twenty-one".