211134411322381 has 2 divisors, whose sum is σ = 211134411322382. Its totient is φ = 211134411322380.

The previous prime is 211134411322339. The next prime is 211134411322441. The reversal of 211134411322381 is 183223114431112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210798718550281 + 335692772100 = 14518909^2 + 579390^2 .

It is a cyclic number.

It is not a de Polignac number, because 211134411322381 - 2³¹ = 211132263838733 is a prime.

It is a super-2 number, since 2×211134411322381² (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 211134411322381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211134411392381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105567205661190 + 105567205661191.

It is an arithmetic number, because the mean of its divisors is an integer number (105567205661191).

Almost surely, 2^{211134411322381} is an apocalyptic number.

It is an amenable number.

211134411322381 is a deficient number, since it is larger than the sum of its proper divisors (1).

211134411322381 is an equidigital number, since it uses as much as digits as its factorization.

211134411322381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 37.

Adding to 211134411322381 its reverse (183223114431112), we get a palindrome (394357525753493).

The spelling of 211134411322381 in words is "two hundred eleven trillion, one hundred thirty-four billion, four hundred eleven million, three hundred twenty-two thousand, three hundred eighty-one".