212454233 has 2 divisors, whose sum is σ = 212454234. Its totient is φ = 212454232.

The previous prime is 212454217. The next prime is 212454239. The reversal of 212454233 is 332454212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181629529 + 30824704 = 13477^2 + 5552^2 .

It is a cyclic number.

It is not a de Polignac number, because 212454233 - 2⁴ = 212454217 is a prime.

It is a super-2 number, since 2×212454233² = 90273602239236578, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (212454239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106227116 + 106227117.

It is an arithmetic number, because the mean of its divisors is an integer number (106227117).

Almost surely, 2^212454233 is an apocalyptic number.

It is an amenable number.

212454233 is a deficient number, since it is larger than the sum of its proper divisors (1).

212454233 is an equidigital number, since it uses as much as digits as its factorization.

212454233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 26.

The square root of 212454233 is about 14575.8098574316. The cubic root of 212454233 is about 596.6987519895.

The spelling of 212454233 in words is "two hundred twelve million, four hundred fifty-four thousand, two hundred thirty-three".