213122301161131 has 2 divisors, whose sum is σ = 213122301161132. Its totient is φ = 213122301161130.

The previous prime is 213122301161087. The next prime is 213122301161251. The reversal of 213122301161131 is 131161103221312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213122301161131 - 2²³ = 213122292772523 is a prime.

It is a super-2 number, since 2×213122301161131² (a number of 29 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 213122301161131.

It is not a weakly prime, because it can be changed into another prime (213122301161431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561150580565 + 106561150580566.

It is an arithmetic number, because the mean of its divisors is an integer number (106561150580566).

Almost surely, 2^{213122301161131} is an apocalyptic number.

213122301161131 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122301161131 is an equidigital number, since it uses as much as digits as its factorization.

213122301161131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

Adding to 213122301161131 its reverse (131161103221312), we get a palindrome (344283404382443).

The spelling of 213122301161131 in words is "two hundred thirteen trillion, one hundred twenty-two billion, three hundred one million, one hundred sixty-one thousand, one hundred thirty-one".