712021 has 2 divisors, whose sum is σ = 712022. Its totient is φ = 712020.

The previous prime is 712007. The next prime is 712051. The reversal of 712021 is 120217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 8100 = 839^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 712021 - 2⁹ = 711509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 711992 and 712010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (712051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 356010 + 356011.

It is an arithmetic number, because the mean of its divisors is an integer number (356011).

2⁷¹²⁰²¹ is an apocalyptic number.

It is an amenable number.

712021 is a deficient number, since it is larger than the sum of its proper divisors (1).

712021 is an equidigital number, since it uses as much as digits as its factorization.

712021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 712021 is about 843.8133679908. The cubic root of 712021 is about 89.2957798024.

Adding to 712021 its reverse (120217), we get a palindrome (832238).

The spelling of 712021 in words is "seven hundred twelve thousand, twenty-one", and thus it is an iban number.