216968070229 has 2 divisors, whose sum is σ = 216968070230. Its totient is φ = 216968070228.

The previous prime is 216968070173. The next prime is 216968070233. The reversal of 216968070229 is 922070869612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208279966129 + 8688104100 = 456377^2 + 93210^2 .

It is a cyclic number.

It is not a de Polignac number, because 216968070229 - 2¹¹ = 216968068181 is a prime.

It is a super-2 number, since 2×216968070229² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216968070239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108484035114 + 108484035115.

It is an arithmetic number, because the mean of its divisors is an integer number (108484035115).

Almost surely, 2^216968070229 is an apocalyptic number.

It is an amenable number.

216968070229 is a deficient number, since it is larger than the sum of its proper divisors (1).

216968070229 is an equidigital number, since it uses as much as digits as its factorization.

216968070229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 216968070229 in words is "two hundred sixteen billion, nine hundred sixty-eight million, seventy thousand, two hundred twenty-nine".