212022333181 has 2 divisors, whose sum is σ = 212022333182. Its totient is φ = 212022333180.

The previous prime is 212022333169. The next prime is 212022333217. The reversal of 212022333181 is 181333220212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112314797956 + 99707535225 = 335134^2 + 315765^2 .

It is a cyclic number.

It is not a de Polignac number, because 212022333181 - 2¹³ = 212022324989 is a prime.

It is a super-2 number, since 2×212022333181² (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 (212022333151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011166590 + 106011166591.

It is an arithmetic number, because the mean of its divisors is an integer number (106011166591).

Almost surely, 2^212022333181 is an apocalyptic number.

It is an amenable number.

212022333181 is a deficient number, since it is larger than the sum of its proper divisors (1).

212022333181 is an equidigital number, since it uses as much as digits as its factorization.

212022333181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 212022333181 its reverse (181333220212), we get a palindrome (393355553393).

The spelling of 212022333181 in words is "two hundred twelve billion, twenty-two million, three hundred thirty-three thousand, one hundred eighty-one".