212520331 has 2 divisors, whose sum is σ = 212520332. Its totient is φ = 212520330.

The previous prime is 212520313. The next prime is 212520337. The reversal of 212520331 is 133025212.

Together with previous prime (212520313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212520331 - 2¹⁵ = 212487563 is a prime.

It is a super-2 number, since 2×212520331² = 90329782176699122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212520299 and 212520308.

It is not a weakly prime, because it can be changed into another prime (212520337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106260165 + 106260166.

It is an arithmetic number, because the mean of its divisors is an integer number (106260166).

Almost surely, 2^212520331 is an apocalyptic number.

212520331 is a deficient number, since it is larger than the sum of its proper divisors (1).

212520331 is an equidigital number, since it uses as much as digits as its factorization.

212520331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 212520331 is about 14578.0770679812. The cubic root of 212520331 is about 596.7606264993.

Adding to 212520331 its reverse (133025212), we get a palindrome (345545543).

The spelling of 212520331 in words is "two hundred twelve million, five hundred twenty thousand, three hundred thirty-one".