210422323381 has 2 divisors, whose sum is σ = 210422323382. Its totient is φ = 210422323380.

The previous prime is 210422323247. The next prime is 210422323409. The reversal of 210422323381 is 183323224012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207448366225 + 2973957156 = 455465^2 + 54534^2 .

It is a cyclic number.

It is not a de Polignac number, because 210422323381 - 2¹⁵ = 210422290613 is a prime.

It is a super-2 number, since 2×210422323381² (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 (210452323381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105211161690 + 105211161691.

It is an arithmetic number, because the mean of its divisors is an integer number (105211161691).

Almost surely, 2^210422323381 is an apocalyptic number.

It is an amenable number.

210422323381 is a deficient number, since it is larger than the sum of its proper divisors (1).

210422323381 is an equidigital number, since it uses as much as digits as its factorization.

210422323381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 210422323381 its reverse (183323224012), we get a palindrome (393745547393).

The spelling of 210422323381 in words is "two hundred ten billion, four hundred twenty-two million, three hundred twenty-three thousand, three hundred eighty-one".