213122113069 has 2 divisors, whose sum is σ = 213122113070. Its totient is φ = 213122113068.

The previous prime is 213122113013. The next prime is 213122113097. The reversal of 213122113069 is 960311221312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118911177225 + 94210935844 = 344835^2 + 306938^2 .

It is a cyclic number.

It is not a de Polignac number, because 213122113069 - 2¹⁹ = 213121588781 is a prime.

It is a super-2 number, since 2×213122113069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213122113069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213122113469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561056534 + 106561056535.

It is an arithmetic number, because the mean of its divisors is an integer number (106561056535).

Almost surely, 2^213122113069 is an apocalyptic number.

It is an amenable number.

213122113069 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122113069 is an equidigital number, since it uses as much as digits as its factorization.

213122113069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 213122113069 in words is "two hundred thirteen billion, one hundred twenty-two million, one hundred thirteen thousand, sixty-nine".