212523229 has 2 divisors, whose sum is σ = 212523230. Its totient is φ = 212523228.

The previous prime is 212523211. The next prime is 212523247. The reversal of 212523229 is 922325212.

It is a balanced prime because it is at equal distance from previous prime (212523211) and next prime (212523247).

It can be written as a sum of positive squares in only one way, i.e., 174108025 + 38415204 = 13195^2 + 6198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212523229 is a prime.

It is a super-2 number, since 2×212523229² = 90332245729172882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212523197 and 212523206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212323229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106261614 + 106261615.

It is an arithmetic number, because the mean of its divisors is an integer number (106261615).

Almost surely, 2^212523229 is an apocalyptic number.

It is an amenable number.

212523229 is a deficient number, since it is larger than the sum of its proper divisors (1).

212523229 is an equidigital number, since it uses as much as digits as its factorization.

212523229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 212523229 is about 14578.1764634676. The cubic root of 212523229 is about 596.7633390311.

The spelling of 212523229 in words is "two hundred twelve million, five hundred twenty-three thousand, two hundred twenty-nine".