215226701 has 2 divisors, whose sum is σ = 215226702. Its totient is φ = 215226700.

The previous prime is 215226689. The next prime is 215226721. The reversal of 215226701 is 107622512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194742025 + 20484676 = 13955^2 + 4526^2 .

It is a cyclic number.

It is not a de Polignac number, because 215226701 - 2¹⁰ = 215225677 is a prime.

It is a Chen prime.

It is equal to p_11874122 and since 215226701 and 11874122 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215226721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107613350 + 107613351.

It is an arithmetic number, because the mean of its divisors is an integer number (107613351).

Almost surely, 2^215226701 is an apocalyptic number.

It is an amenable number.

215226701 is a deficient number, since it is larger than the sum of its proper divisors (1).

215226701 is an equidigital number, since it uses as much as digits as its factorization.

215226701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 215226701 is about 14670.6067018375. The cubic root of 215226701 is about 599.2831262352.

The spelling of 215226701 in words is "two hundred fifteen million, two hundred twenty-six thousand, seven hundred one".