213122629 has 2 divisors, whose sum is σ = 213122630. Its totient is φ = 213122628.

The previous prime is 213122603. The next prime is 213122671. The reversal of 213122629 is 926221312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213101604 + 21025 = 14598^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 213122629 - 2⁷ = 213122501 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213122597 and 213122606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213122029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561314 + 106561315.

It is an arithmetic number, because the mean of its divisors is an integer number (106561315).

Almost surely, 2^213122629 is an apocalyptic number.

It is an amenable number.

213122629 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122629 is an equidigital number, since it uses as much as digits as its factorization.

213122629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 213122629 is about 14598.7201151334. The cubic root of 213122629 is about 597.3238490322.

The spelling of 213122629 in words is "two hundred thirteen million, one hundred twenty-two thousand, six hundred twenty-nine".